{"id":16157,"date":"2021-09-23T02:14:00","date_gmt":"2021-09-23T09:14:00","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=16157"},"modified":"2026-02-18T00:08:40","modified_gmt":"2026-02-18T08:08:40","slug":"p0191-code-fuel-rail-pressure-sensor-a-circuit-range-performance","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p0191-code-fuel-rail-pressure-sensor-a-circuit-range-performance\/","title":{"rendered":"P0191 Code: Fuel Rail Pressure Sensor \u201cA\u201d Circuit Range\/Performance"},"content":{"rendered":"<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.0 Transitional\/\/EN\" \"http:\/\/www.w3.org\/TR\/REC-html40\/loose.dtd\">\n<html><body><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 5<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column16157_e8ec6f-31 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column16157_e8ec6f-31 > .kt-inside-inner-col,.kadence-column16157_e8ec6f-31 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column16157_e8ec6f-31 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column16157_e8ec6f-31 > .kt-inside-inner-col{flex-direction:column;}.kadence-column16157_e8ec6f-31 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column16157_e8ec6f-31 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column16157_e8ec6f-31{position:relative;}@media all and (max-width: 1024px){.kadence-column16157_e8ec6f-31 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column16157_e8ec6f-31 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column16157_e8ec6f-31 inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-e28635  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-d99abb\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading16157_c247eb-83, .wp-block-kadence-advancedheading.kt-adv-heading16157_c247eb-83[data-kb-block=\"kb-adv-heading16157_c247eb-83\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading16157_c247eb-83 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading16157_c247eb-83[data-kb-block=\"kb-adv-heading16157_c247eb-83\"] mark.kt-highlight{font-family:Inter;font-weight:500;font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading16157_c247eb-83 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading16157_c247eb-83[data-kb-block=\"kb-adv-heading16157_c247eb-83\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading16157_c247eb-83 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading16157_c247eb-83\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>DTC P0191 stands for &ldquo;Fuel Rail Pressure Sensor Circuit &ldquo;A&rdquo; Range Performance.&rdquo; The code is logged once the PCM detects an irrational signal from the fuel rail pressure sensor.<\/li>\n\n\n\n<li>The fuel rail pressure sensor monitors pressure levels in the fuel rail.<\/li>\n\n\n\n<li>Aside from a failing sensor, the code P0191 can be logged because of circuit issues. It can also be logged if the fuel pressure is too high or too low.<\/li>\n\n\n\n<li>In rare cases, code P0191 can be logged once there&rsquo;s an issue with your PCM.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>The <a href=\"https:\/\/www.carparts.com\/fuel-rail-pressure-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"fuel rail pressure sensor\">fuel rail pressure sensor<\/a> keeps the powertrain control module (PCM) aware of the pressure levels in the fuel rail, so that the computer knows how much fuel the engine needs. When the PCM receives an irrational signal from the fuel rail pressure sensor, the module logs the P0191 code.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P0191 Code Mean?<\/h2>\n\n\n\n<p>Diagnostic trouble code (DTC) P0191 stands for &ldquo;Fuel Rail Pressure Sensor Circuit &ldquo;A&rdquo; Range\/Performance.&rdquo; It indicates a potential abnormality in the fuel rail pressure readings.&nbsp; Because of either a mechanical or electrical problem, the signal sent by the fuel rail pressure sensor doesn&rsquo;t match the value the PCM expects to see.<\/p>\n\n\n<style>.kadence-column16157_24ba07-3e > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column16157_24ba07-3e > .kt-inside-inner-col,.kadence-column16157_24ba07-3e > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column16157_24ba07-3e > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column16157_24ba07-3e > .kt-inside-inner-col{flex-direction:column;}.kadence-column16157_24ba07-3e > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column16157_24ba07-3e > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column16157_24ba07-3e{position:relative;}@media all and (max-width: 1024px){.kadence-column16157_24ba07-3e > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column16157_24ba07-3e > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column16157_24ba07-3e kb-section-dir-vertical kb-section-sm-dir-vertical inner-column-1 pro-tip-widget\"><div class=\"kt-inside-inner-col\"><style>.kb-row-layout-id16157_1c3729-fe > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id16157_1c3729-fe > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id16157_1c3729-fe > .kt-row-column-wrap{column-gap:var(--global-kb-gap-none, 0rem );row-gap:var(--global-kb-gap-md, 2rem);padding-top:20px;padding-bottom:20px;padding-left:16px;padding-right:32px;grid-template-columns:minmax(0, calc(10% - ((var(--global-kb-gap-none, 0rem ) * 1 )\/2)))minmax(0, calc(90% - ((var(--global-kb-gap-none, 0rem ) * 1 )\/2)));}.kb-row-layout-id16157_1c3729-fe > .kt-row-layout-overlay{opacity:0.00;}.kb-row-layout-id16157_1c3729-fe .kt-row-layout-bottom-sep{height:100px;}.kb-row-layout-id16157_1c3729-fe .kt-row-layout-bottom-sep svg{width:100%;}.kb-row-layout-id16157_1c3729-fe .kt-row-layout-bottom-sep svg{fill:#ffffff!important;}.kb-row-layout-id16157_1c3729-fe .kt-row-layout-top-sep{height:100px;}.kb-row-layout-id16157_1c3729-fe .kt-row-layout-top-sep svg{width:100%;}.kb-row-layout-id16157_1c3729-fe .kt-row-layout-top-sep svg{fill:#ffffff!important;}@media all and (max-width: 1024px){.kb-row-layout-id16157_1c3729-fe > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr) minmax(0, 2fr);}}@media all and (max-width: 1024px){.kb-row-layout-id16157_1c3729-fe .kt-row-layout-bottom-sep{height:px;}}@media all and (max-width: 1024px){.kb-row-layout-id16157_1c3729-fe .kt-row-layout-bottom-sep svg{width:%;}}@media all and (max-width: 767px){.kb-row-layout-id16157_1c3729-fe > .kt-row-column-wrap{padding-top:28px;padding-bottom:25px;padding-left:16px;padding-right:16px;grid-template-columns:minmax(0, 1fr) minmax(0, 2fr);}.kb-row-layout-id16157_1c3729-fe .kt-row-layout-bottom-sep{height:px;}.kb-row-layout-id16157_1c3729-fe .kt-row-layout-bottom-sep svg{width:%;}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id16157_1c3729-fe alignnone pro-tip-wrap wp-block-kadence-rowlayout\"><div class=\"kt-row-column-wrap kt-has-2-columns kt-row-layout-right-golden kt-tab-layout-right-golden kt-mobile-layout-right-golden kt-row-valign-top\">\n<style>.kadence-column16157_d198d6-2f > .kt-inside-inner-col{display:flex;}.kadence-column16157_d198d6-2f > .kt-inside-inner-col{min-height:45px;border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column16157_d198d6-2f > .kt-inside-inner-col,.kadence-column16157_d198d6-2f > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column16157_d198d6-2f > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column16157_d198d6-2f > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;}.kadence-column16157_d198d6-2f > .kt-inside-inner-col > *, .kadence-column16157_d198d6-2f > .kt-inside-inner-col > figure.wp-block-image, .kadence-column16157_d198d6-2f > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column16157_d198d6-2f > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}.kadence-column16157_d198d6-2f > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column16157_d198d6-2f{position:relative;}@media all and (max-width: 1024px){.kadence-column16157_d198d6-2f > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;}}@media all and (min-width: 768px) and (max-width: 1024px){.kadence-column16157_d198d6-2f > .kt-inside-inner-col > *, .kadence-column16157_d198d6-2f > .kt-inside-inner-col > figure.wp-block-image, .kadence-column16157_d198d6-2f > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column16157_d198d6-2f > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}@media all and (max-width: 767px){.kadence-column16157_d198d6-2f > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:flex-start;}.kadence-column16157_d198d6-2f > .kt-inside-inner-col > *, .kadence-column16157_d198d6-2f > .kt-inside-inner-col > figure.wp-block-image, .kadence-column16157_d198d6-2f > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column16157_d198d6-2f > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column16157_d198d6-2f kb-section-dir-horizontal kb-section-md-dir-horizontal inner-column-1 pro-tip-item1\"><div class=\"kt-inside-inner-col\"><style>.kb-image16157_2bc9a5-f8.kb-image-is-ratio-size, .kb-image16157_2bc9a5-f8 .kb-image-is-ratio-size{max-width:45px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image16157_2bc9a5-f8.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image16157_2bc9a5-f8 .kb-image-is-ratio-size{align-self:unset;}.kb-image16157_2bc9a5-f8 figure{max-width:45px;}.kb-image16157_2bc9a5-f8 .image-is-svg, .kb-image16157_2bc9a5-f8 .image-is-svg img{width:100%;}.kb-image16157_2bc9a5-f8 .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<div class=\"wp-block-kadence-image kb-image16157_2bc9a5-f8\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/f_auto,dpr_auto,q_auto,c_pad\/carparts\/blog\/widgets\/protip\/services-icon\" alt=\"\" class=\"kb-img\"><\/figure><\/div>\n<\/div><\/div>\n\n\n<style>.kadence-column16157_bab833-48 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column16157_bab833-48 > .kt-inside-inner-col,.kadence-column16157_bab833-48 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column16157_bab833-48 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column16157_bab833-48 > .kt-inside-inner-col{flex-direction:column;}.kadence-column16157_bab833-48 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column16157_bab833-48 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column16157_bab833-48{position:relative;}@media all and (max-width: 1024px){.kadence-column16157_bab833-48 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column16157_bab833-48 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column16157_bab833-48 inner-column-2 pro-tip-item2\"><div class=\"kt-inside-inner-col\">\n<div class=\"protip-desc\">\n\t<div class=\"help-tip\">\n\t\t<p><strong>Pro Tips<\/strong> are nuggets of information direct from ASE-certified automobile technicians working with CarParts.com, which may include unique, personal insights based on their years of experience working in the automotive industry. These can help you make more informed decisions about your car.<\/p>\n\t<\/div>\n    <div class=\"help-caption\">\n        <p>\n            <strong>Pro Tip:<\/strong>\nTypically a &ldquo;performance&rdquo; code like P0191 is related to one of the ECM\/PCM&rsquo;s rationality checks; meaning, that the measured value doesn&rsquo;t line up with what the ECM\/PCM expects to see based on other inputs pertinent to the value being measured.\n        <\/p>\n    <\/div>\n<\/div>\n<\/div><\/div>\n\n<\/div><\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-data443-irp-shortcode irp-shortcode\"><div style=\"clear:both; margin-top:0em; margin-bottom:1em;\"><a href=\"https:\/\/www.carparts.com\/blog\/p0089-code-fuel-pressure-regulator-performance\/\" target=\"_self\" rel=\"dofollow\" class=\"ue0df0d815d95e64116a32d8b5e9f2601\"><style> .ue0df0d815d95e64116a32d8b5e9f2601 { padding:0px; margin: 0; padding-top:1em!important; padding-bottom:1em!important; width:100%; display: block; font-weight:bold; background-color:#eaeaea; border:0!important; border-left:4px solid #34495E!important; text-decoration:none; } .ue0df0d815d95e64116a32d8b5e9f2601:active, .ue0df0d815d95e64116a32d8b5e9f2601:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; text-decoration:none; } .ue0df0d815d95e64116a32d8b5e9f2601 { transition: background-color 250ms; webkit-transition: background-color 250ms; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; } .ue0df0d815d95e64116a32d8b5e9f2601 .ctaText { font-weight:bold; color:#464646; text-decoration:none; font-size: 16px; } .ue0df0d815d95e64116a32d8b5e9f2601 .postTitle { color:#000000; text-decoration: underline!important; font-size: 16px; } .ue0df0d815d95e64116a32d8b5e9f2601:hover .postTitle { text-decoration: underline!important; } <\/style><div style=\"padding-left:1em; padding-right:1em;\"><span class=\"ctaText\">See also<\/span>&nbsp; <span class=\"postTitle\">P0089 Code: Fuel Pressure Regulator Performance<\/span><\/div><\/a><\/div><\/div>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"723\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/09\/Fuel-Rail-Pressure-Sensor-Isolated-1024x723.jpg\" alt=\"Fuel Rail Pressure Sensor Isolated\" class=\"wp-image-44178\" style=\"width:1024px;height:723px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/09\/Fuel-Rail-Pressure-Sensor-Isolated-1024x723.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/09\/Fuel-Rail-Pressure-Sensor-Isolated-300x212.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/09\/Fuel-Rail-Pressure-Sensor-Isolated-768x542.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/09\/Fuel-Rail-Pressure-Sensor-Isolated-1536x1084.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/09\/Fuel-Rail-Pressure-Sensor-Isolated-150x106.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/09\/Fuel-Rail-Pressure-Sensor-Isolated.jpg 1700w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">P0191 indicates a potential abnormality in the fuel rail pressure readings.<\/figcaption><\/figure>\n\n\n\n<p>Too little fuel will reduce the engine&rsquo;s output when conditions demand all the power it can get. Conversely, adding more fuel than the engine could combust will waste fuel and raise emission levels in the engine exhaust, potentially causing damage to the <a href=\"https:\/\/www.carparts.com\/catalytic-converter\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"catalytic converter\">catalytic converter<\/a>.<\/p>\n\n\n\n<p>To prevent both lean and rich mixtures from compromising the engine&rsquo;s performance, the PCM regulates the output of the <a href=\"https:\/\/www.carparts.com\/fuel-injector\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"fuel injectors\">fuel injectors<\/a> to add the right amount of fuel to the engine. On many modern vehicles, the PCM depends on the fuel rail pressure sensor to send it a constant stream of accurate data and will log the P0191 code if it gets the wrong signals from the sensor.<\/p>\n\n\n\n<p>A technical knowledge of common rail fuel injection systems could help you address P0191 if you&rsquo;re planning a DIY fix. You can read our in-depth explanation <a href=\"https:\/\/www.carparts.com\/blog\/p0087-code-fuel-railsystem-pressure-too-low\/#Common_Rail_Fuel_Injection_Systems\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"here\">here<\/a>.<\/p>\n\n\n\n<div class=\"wp-block-data443-irp-shortcode irp-shortcode\"><div style=\"clear:both; margin-top:0em; margin-bottom:1em;\"><a href=\"https:\/\/www.carparts.com\/blog\/p0004-code-fuel-volume-regulator-control-circuit-high\/\" target=\"_self\" rel=\"dofollow\" class=\"u7f8b50664c746e6593e456d59d3bbc4b\"><style> .u7f8b50664c746e6593e456d59d3bbc4b { padding:0px; margin: 0; padding-top:1em!important; padding-bottom:1em!important; width:100%; display: block; font-weight:bold; background-color:#eaeaea; border:0!important; border-left:4px solid #34495E!important; text-decoration:none; } .u7f8b50664c746e6593e456d59d3bbc4b:active, .u7f8b50664c746e6593e456d59d3bbc4b:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; text-decoration:none; } .u7f8b50664c746e6593e456d59d3bbc4b { transition: background-color 250ms; webkit-transition: background-color 250ms; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; } .u7f8b50664c746e6593e456d59d3bbc4b .ctaText { font-weight:bold; color:#464646; text-decoration:none; font-size: 16px; } .u7f8b50664c746e6593e456d59d3bbc4b .postTitle { color:#000000; text-decoration: underline!important; font-size: 16px; } .u7f8b50664c746e6593e456d59d3bbc4b:hover .postTitle { text-decoration: underline!important; } <\/style><div style=\"padding-left:1em; padding-right:1em;\"><span class=\"ctaText\">See also<\/span>&nbsp; <span class=\"postTitle\">P0004 Code: Fuel Volume Regulator Control Circuit High<\/span><\/div><\/a><\/div><\/div>\n\n\n\n<p><strong>Note:<\/strong> The <a href=\"https:\/\/www.sae.org\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\" aria-label=\"Society of Automotive Engineers\">Society of Automotive Engineers<\/a> (SAE) defined the generic code P0191. But the vehicle&rsquo;s manufacturer may define the trouble code differently.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Possible Causes of the P0191 Code?<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"789\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/09\/electric-transmission-control-module-fitted-for-an-automatic-transmission-1024x789.jpg\" alt=\"electric transmission control module fitted for an automatic transmission\" class=\"wp-image-44179\" style=\"width:1024px;height:789px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/09\/electric-transmission-control-module-fitted-for-an-automatic-transmission-1024x789.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/09\/electric-transmission-control-module-fitted-for-an-automatic-transmission-300x231.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/09\/electric-transmission-control-module-fitted-for-an-automatic-transmission-768x592.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/09\/electric-transmission-control-module-fitted-for-an-automatic-transmission-1536x1184.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/09\/electric-transmission-control-module-fitted-for-an-automatic-transmission-150x116.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/09\/electric-transmission-control-module-fitted-for-an-automatic-transmission.jpg 1700w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">An issue with the PCM is a possible cause of the P0191 code.<\/figcaption><\/figure>\n\n\n\n<p>Several mechanical and electrical issues can trigger the P0191 code. They include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Bad or failing fuel pressure sensor<\/li>\n\n\n\n<li>An issue with the fuel pressure sensor circuit<\/li>\n\n\n\n<li>Fuel pressure that&rsquo;s too high or too low<\/li>\n\n\n\n<li>An issue with the PCM, such as software in need of an update<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Symptoms of the Code P0191?<\/h2>\n\n\n\n<p>Since the code P0191 concerns the engine&rsquo;s fuel supply, its effects are typically noticeable. Likely warning signs of a problem with the fuel rail pressure sensor and its circuit include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Check Engine Light triggers or blinks<\/li>\n\n\n\n<li>Increased fuel consumption<\/li>\n\n\n\n<li>Abnormal smell in the tailpipe emissions<\/li>\n\n\n\n<li>Engine <a href=\"https:\/\/www.carparts.com\/blog\/car-hesitates-when-accelerating-causes-and-faq\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"hesitates\">hesitates<\/a> or stalls<\/li>\n\n\n\n<li>PCM logged a rich fuel trim code (<a href=\"https:\/\/www.carparts.com\/blog\/p0172-code-fuel-system-too-rich-bank-1\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"P0172\">P0172<\/a> Code: Fuel system too rich)<\/li>\n\n\n\n<li>PCM logged a lean fuel trim code (<a href=\"https:\/\/www.carparts.com\/blog\/p0171-code-system-too-lean-bank-1\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"P0171\">P0171<\/a> Code: Fuel system too lean)<\/li>\n\n\n\n<li>Failed emissions test<\/li>\n<\/ul>\n\n\n\n<div id=\"article-search-widget\">\n<div class=\"cp-search\">\n<div align=\"center\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/w_auto,dpr_auto\/carparts\/logos\/badge_wordmark\/full_color\/CP_LOGO_COLOUR_RGB\" alt=\"CarParts.com\" width=\"300\" height=\"56\">\n<\/div>\n<form id=\"cpsearchform\" name=\"cpsearchform\" action=\"https:\/\/www.carparts.com\/search\" method=\"get\" target=\"_blank\" accept-charset=\"character_set\" aria-label=\"search CarParts.com\">\n    <input type=\"text\" class=\"keyword\" name=\"q\" placeholder=\"Search for parts on CarParts.com\" value=\"\" aria-label=\"Search CarParts.com\"><input type=\"submit\" class=\"btn-search\" value=\"Search\" aria-label=\"Search\">\n<\/form>\n<\/div>\n<\/div>\n\n\n\n<p>Very rarely, a vehicle will not display any warning signs associated with a PO0191 code. You can check the PCM by plugging your OBD-II scanning tool into the right port and checking the <a href=\"https:\/\/www.carparts.com\/blog\/search-obd2-codes-list\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"diagnostic trouble codes\">diagnostic trouble codes<\/a> logged by the computer.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P0191 Code<\/h2>\n\n\n\n<p>Only car owners who possess sufficient skills and experience in DIY auto repair should try their hand at fixing a P0191 code. Those who lack confidence or time should bring their vehicle to a reliable auto repair shop for diagnosis and repair.<\/p>\n\n\n\n<p>Learn how to diagnose a P0191 Ford case with the video below. Even if your vehicle is of a different make or model, watching the video can give you a better idea about checking the fuel rail pressure sensor and its circuit.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"P0191 Check Engine Trouble Code - How to Diagnose the Problem\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/gC0O1J4Am7E?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">How to Fix the P0191 Code<\/h2>\n\n\n\n<p>Once you&rsquo;ve established what triggered the P0191 code, figure out how to fix it. Rely on credible online resources. Make sure that the fix you find is specific to your vehicle&rsquo;s make and model. Consider investing in an ALLDATA subscription for comprehensive repair guides that will help you resolve this DTC and other issues you may encounter in the future.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Products Mentioned in this Guide<\/h2>\n\n\n\n<div class=\"reusable-productlink\">\n\n<!-- start of editable content -->\n\n<a href=\"https:\/\/www.carparts.com\/fuel-rail-pressure-sensor\" target=\"_blank\" aria-label=\"Fuel Rail Pressure Sensor\" rel=\"noopener\">\n<img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/d_noimage.jpg,h_200,w_200,c_pad,f_auto,q_auto,dpr_auto,e_sharpen\/images\/ac12627092_1\" alt=\"Fuel Rail Pressure Sensor\">\n<strong>Fuel Rail Pressure Sensor<\/strong>\n<\/a>\n\n<a href=\"https:\/\/www.carparts.com\/catalytic-converter\" target=\"_blank\" aria-label=\"Catalytic Converter\" rel=\"noopener\">\n<img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/d_noimage.jpg,h_200,w_200,c_pad,f_auto,q_auto,dpr_auto,e_sharpen\/images\/repi960303_1\" alt=\"Catalytic Converter\">\n<strong>Catalytic Converter<\/strong>\n<\/a>\n\n<a href=\"https:\/\/www.carparts.com\/fuel-injector\" target=\"_blank\" aria-label=\"Fuel Injector\" rel=\"noopener\">\n<img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/d_noimage.jpg,h_200,w_200,c_pad,f_auto,q_auto,dpr_auto,e_sharpen\/images\/repf314302_1\" alt=\"Fuel Injector\">\n<strong>Fuel Injector<\/strong>\n<\/a>\n\n<!-- end of editable content -->\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Getting Your Hands on a New Fuel Pressure Sensor to Fix DTC P0191<\/h2>\n\n\n\n<p>One of the most common reasons why a vehicle logs a P0191 code is due to a malfunctioning fuel pressure sensor. Replacing the fuel pressure sensor should clear the code, but you&rsquo;ll need to find a high-quality replacement to ensure the problem is fixed for good.<\/p>\n\n\n\n<p>Fortunately, getting your hands on a new and compatible fuel pressure sensor is easy with the help of <a href=\"http:\/\/carparts.com\" target=\"_blank\" rel=\"noreferrer noopener nofollow\" aria-label=\"CarParts.com\">CarParts.com<\/a>.<\/p>\n\n\n\n<p>We make it easy for drivers like you to shop for compatible replacement parts. Simply use the vehicle selector on our mobile app or website to check for fitment. All you need to do is select the specific year, make, and model of your ride to narrow down the choices in our catalog.<\/p>\n\n\n\n<p>Our team of industry experts sources sensors from only the best parts manufacturers. You won&rsquo;t have to worry about your order failing any time soon.<\/p>\n\n\n\n<p>Complete urgent repairs without breaking the bank. We offer a low-price guarantee as well as a lifetime replacement guarantee to give customers peace of mind when shopping online.&nbsp;<br>Don&rsquo;t leave DTC P0191 unresolved. Get a replacement <a href=\"https:\/\/www.carparts.com\/fuel-pressure-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"fuel pressure sensor\">fuel pressure sensor<\/a> today by browsing our catalog at CarParts.com.<\/p>\n\n\n\n<div class=\"shop-project\">\n\n    <h2>Shop this Project<\/h2>\n\n    <ul class=\"shop-project-list\">\n        \n        <li>\n            <div class=\"shop-project-item\">\n                <div class=\"stp-image-url\">\n                    <a href=\"https:\/\/www.carparts.com\/details\/fuel-pressure-sensor\/replacement\/repb543601\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label='&lt;img src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/repb543601_1\" alt=\"Replacement &ndash; Fuel Pressure Sensor &ndash; Direct Fit, Sold individually\" \/&gt;'><img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/repb543601_1\" alt=\"Replacement &ndash; Fuel Pressure Sensor &ndash; Direct Fit, Sold individually\"><\/a>\n                <\/div>\n\n                <div class=\"stp-desc\">\n                                            <p class=\"stp-title\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/fuel-pressure-sensor\/replacement\/repb543601\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Replacement &ndash; Fuel Pressure Sensor &ndash; Direct Fit, Sold individually\">Replacement &ndash; Fuel Pressure Sensor &ndash; Direct Fit, Sold individually<\/a>\n                        <\/p>\n                    \n                    <div class=\"stp-stars\">\n                        <img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/q_auto,dpr_auto,f_auto\/carparts\/blog\/widgets\/shop-project\/stars\/star-4.5.svg\" alt=\"4.5 Stars\">\n                    <\/div>\n\n                                            <p class=\"stp-price\">$15.99<\/p>\n                    \n                    <p><small>Price and rating may change from the time content is published.<\/small><\/p>\n\n                                            <p class=\"stp-cta\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/fuel-pressure-sensor\/replacement\/repb543601\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Shop Now\">Shop Now<\/a>\n                        <\/p>\n                                    <\/div>\n\n            <\/div>\n        <\/li>\n\n        \n        <li>\n            <div class=\"shop-project-item\">\n                <div class=\"stp-image-url\">\n                    <a href=\"https:\/\/www.carparts.com\/details\/fuel-pressure-sensor\/replacement\/repa543601\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label='&lt;img src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/repa543601_1\" alt=\"Replacement &ndash; Fuel Pressure Sensor &ndash; Direct Fit, Sold individually\" \/&gt;'><img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/repa543601_1\" alt=\"Replacement &ndash; Fuel Pressure Sensor &ndash; Direct Fit, Sold individually\"><\/a>\n                <\/div>\n\n                <div class=\"stp-desc\">\n                                            <p class=\"stp-title\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/fuel-pressure-sensor\/replacement\/repa543601\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Replacement &ndash; Fuel Pressure Sensor &ndash; Direct Fit, Sold individually\">Replacement &ndash; Fuel Pressure Sensor &ndash; Direct Fit, Sold individually<\/a>\n                        <\/p>\n                    \n                    <div class=\"stp-stars\">\n                        <img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/q_auto,dpr_auto,f_auto\/carparts\/blog\/widgets\/shop-project\/stars\/star-4.5.svg\" alt=\"4.5 Stars\">\n                    <\/div>\n\n                                            <p class=\"stp-price\">$26.99<\/p>\n                    \n                    <p><small>Price and rating may change from the time content is published.<\/small><\/p>\n\n                                            <p class=\"stp-cta\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/fuel-pressure-sensor\/replacement\/repa543601\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Shop Now\">Shop Now<\/a>\n                        <\/p>\n                                    <\/div>\n\n            <\/div>\n        <\/li>\n\n        \n        <li>\n            <div class=\"shop-project-item\">\n                <div class=\"stp-image-url\">\n                    <a href=\"https:\/\/www.carparts.com\/details\/fuel-pressure-sensor\/replacement\/rf54360003\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label='&lt;img src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/rf54360003_1\" alt=\"Replacement &ndash; Fuel Pressure Sensor &ndash; Direct Fit, Sold individually\" \/&gt;'><img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/rf54360003_1\" alt=\"Replacement &ndash; Fuel Pressure Sensor &ndash; Direct Fit, Sold individually\"><\/a>\n                <\/div>\n\n                <div class=\"stp-desc\">\n                                            <p class=\"stp-title\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/fuel-pressure-sensor\/replacement\/rf54360003\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Replacement &ndash; Fuel Pressure Sensor &ndash; Direct Fit, Sold individually\">Replacement &ndash; Fuel Pressure Sensor &ndash; Direct Fit, Sold individually<\/a>\n                        <\/p>\n                    \n                    <div class=\"stp-stars\">\n                        <img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/q_auto,dpr_auto,f_auto\/carparts\/blog\/widgets\/shop-project\/stars\/star-5.svg\" alt=\"5 Stars\">\n                    <\/div>\n\n                                            <p class=\"stp-price\">$28.99<\/p>\n                    \n                    <p><small>Price and rating may change from the time content is published.<\/small><\/p>\n\n                                            <p class=\"stp-cta\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/fuel-pressure-sensor\/replacement\/rf54360003\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Shop Now\">Shop Now<\/a>\n                        <\/p>\n                                    <\/div>\n\n            <\/div>\n        <\/li>\n\n            <\/ul>\n<\/div>\n\n\n<\/body><\/html>\n","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 5<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>The fuel rail pressure sensor keeps the powertrain control module (PCM) aware of the pressure levels in the fuel rail,&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p0191-code-fuel-rail-pressure-sensor-a-circuit-range-performance\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":1651,"featured_media":16170,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[1314],"tags":[1463],"ppma_author":[2607,2985],"class_list":{"0":"post-16157","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"tag-fuel-pressure-sensor","9":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P0191 Code: Fuel Rail Pressure Sensor \u201cA\u201d Circuit Range\/Performance - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Need to know what the P0191 code means for your car? Read on to learn more about this engine code, its causes, and symptoms.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.carparts.com\/blog\/p0191-code-fuel-rail-pressure-sensor-a-circuit-range-performance\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0191 Code: Fuel Rail Pressure Sensor \u201cA\u201d Circuit Range\/Performance - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Need to know what the P0191 code means for your car? 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