Shop Parts keyboard_double_arrow_right
Need car parts? Select your vehicle
Reading Time: 4 minutes
Summary
  • If your vehicle logs a P0192 code, it means that the powertrain control module (PCM) has detected a problem with the fuel rail pressure sensor. This code typically applies to vehicles with an electronic returnless fuel injection system.
  • If this code is left unresolved, you might notice issues like poor engine performance and increased fuel consumption.
  • A P0192 code can be caused by a faulty fuel rail pressure sensor, wiring issues with the sensor, or a faulty PCM.

Returnless fuel injection systems have a regulator that operates at constant pressure, eliminating the need for a spring-loaded vacuum regulator to change fuel delivery. In this system, there’s no need to vary fuel pressure to achieve similar differentials in all injectors when the intake vacuum drops. The powertrain control module (PCM) determines the amount of pressure that goes into the injectors by monitoring the fuel rail pressure sensor. Then, the PCM adjusts fuel delivery to meet engine demands.

If the PCM receives an erratic signal from the fuel pressure sensor, on-board diagnostics will log a P0192 code.

What Does the P0192 Code Mean?

Diagnostic trouble code (DTC) P0192 stands for “Fuel Rail Pressure Sensor ‘A’ Circuit.”

See also  P0480 Code: Fan 1 Control Circuit

The fuel rail pressure sensor is found in vehicles with an electronic returnless fuel injection system. This sensor sends the information needed by the PCM to determine the appropriate fuel system operation.

fuel pressure sensor in cars with electronic returnless fuel injection system
The fuel rail pressure sensor is found in vehicles with an electronic returnless fuel injection system.

Using the PCM, the fuel injection system is able to compensate for changes in engine load and vacuum. The engine computer also monitors the fuel rail pressure sensor, increasing injector duration and fuel pump operating speed accordingly as pressure in the supply rail drops.

A problem with the fuel rail pressure sensor circuit can cause a series of drivability issues and trigger a P0192 code.

Note: The definition of code P0192 might be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.

What are the Common Causes of the P0192 Code?

  • Faulty fuel rail pressure sensor
  • Wiring issues
  • PCM failure

What are the Common Symptoms of the P0192 Code?

How to Diagnose the P0192 Code

DTC P0192 is a generic powertrain code that can be logged in vehicles with an OBD-II system. However, keep in mind that the steps for diagnosing trouble codes can vary, depending on vehicle specifications. If you’re not familiar with the diagnostic process, it’s best to leave the job to the pros to ensure that all steps and protocols are followed correctly.

See also  P0606 Code: Control Module Processor

But if you think you can work on your vehicle without much help, then you can go ahead and do it yourself.

Here are some videos that show what the process usually involves:

How to Fix the P0192 Code

Resolving a trouble code like P0192 might require advanced technical knowledge. Trying to fix this trouble code without the right tools or know-how can be confusing and might lead to further complications if done incorrectly. Under these circumstances, it’s best to have a certified mechanic work on your vehicle for you.

But if you’ve had your fair share of resolving DTCs, make sure you have the right repair manual before proceeding. Guides like those from Chilton or an ALLDATA subscription contain vehicle-specific repair information, so you might want to check those out.

Replacing the Fuel Rail Pressure Sensor to Fix DTC P0192

If your vehicle logs DTC P0192, there’s a good chance the fuel rail pressure sensor is malfunctioning. Replacing the fuel rail pressure sensor should fix the problem, but it can be tricky to get your hands on a new one.

Fortunately, finding a replacement that works with your vehicle is easy with the help of CarParts.com.

We make sure to get our auto parts from trusted names in the industry. Each item in our catalog is carefully selected by a team of professionals to guarantee both quality and longevity. You won’t have to worry about your new fuel rail pressure sensor failing any time soon.

See also  P0193 Code: Fuel Rail Pressure Sensor “A” Circuit High

Start shopping by downloading our mobile app or visiting our website. Check for fitment by choosing your vehicle’s exact year, make, model, and engine from our tool. We make it easier to find replacement parts that are compatible with your vehicle.

Enjoy low prices, excellent customer service, and fast shipping when you shop at CarParts.com. Our warehouses are strategically located all over the US to make sure that your order arrives in a matter of days.

Don’t hold out on clearing DTC P0192. Get your hands on a new fuel rail pressure sensor by placing your order today!

Shop this Project

Replacement – Fuel Pressure Sensor – Direct Fit, Sold individually
, P0192 Code: Fuel Rail Pressure Sensor “A” Circuit Low
$19.49 Price and rating may change from the time content is published.
Replacement – Fuel Pressure Sensor – Direct Fit, Sold individually
, P0192 Code: Fuel Rail Pressure Sensor “A” Circuit Low
$21.99 Price and rating may change from the time content is published.
Replacement – Fuel Pressure Sensor – Direct Fit, Sold individually
, P0192 Code: Fuel Rail Pressure Sensor “A” Circuit Low
$22.99 Price and rating may change from the time content is published.
About The Authors
Written By Automotive and Tech Writers

The CarParts.com Research Team is composed of experienced automotive and tech writers working with (ASE)-certified automobile technicians and automotive journalists to bring up-to-date, helpful information to car owners in the US. Guided by CarParts.com's thorough editorial process, our team strives to produce guides and resources DIYers and casual car owners can trust.

Reviewed By Contact Center Manager and Technical Reviewer at CarParts.com

William “Bill” Guzenski has produced hundreds of how-to videos for the automotive community. He’s an ASE Certified Master Automobile Technician, and is affiliated with the Specialty Equipment Market Association (SEMA). He loves attending race events and car shows throughout the country, as well as traveling in his 40-foot motorhome, exploring abandoned mines and ghost towns.

Any information provided on this Website is for informational purposes only and is not intended to replace consultation with a professional mechanic. The accuracy and timeliness of the information may change from the time of publication.

headlights and components
Subscribe
Notify of
guest
0 Comments
Inline Feedbacks
View all comments

View all Questions & Answers

expand_more
CarParts.com Answers BE PART OF OUR COMMUNITY: Share your knowledge & help fellow drivers Join Now