{"id":80061,"date":"2023-01-23T23:01:25","date_gmt":"2023-01-24T07:01:25","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=80061"},"modified":"2024-12-17T18:26:15","modified_gmt":"2024-12-18T02:26:15","slug":"p2190-code-system-too-rich-off-idle-bank-2","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p2190-code-system-too-rich-off-idle-bank-2\/","title":{"rendered":"P2190 Code: System Too Rich Off Idle Bank 2"},"content":{"rendered":"\nReading Time: <\/span> 4<\/span> minutes<\/span><\/span>\n\n\n

P2190 is a generic trouble code indicating a rich condition that exists above idle but not necessarily at idle.<\/p>\n\n\n\n

What Does the P2190 Code Mean?<\/h2>\n\n\n\n
\"mechanic
The P2190 code is set once the PCM detects a rich condition (or too much fuel).<\/figcaption><\/figure>\n\n\n\n

Diagnostic trouble code<\/a> P2190 stands for “System Too Rich Off Idle Bank 2.” The code is set once the PCM detects a rich condition (or too much fuel). The code is logged once the PCM detects that the desired air-fuel ratio isn’t achieved. This code is assigned for Bank 2, the bank of cylinders that doesn’t include cylinder #1. Depending on the fuel system and vehicle manufacturer, this can be a mechanical or electrical circuit issue.<\/p>\n\n\n\n

The P2190 code is logged in fuel-injected engines from most European and Asian manufacturers since 2010. This includes vehicles manufactured by Volkswagen<\/a>, Audi<\/a>, Mercedes<\/a>, BMW<\/a>\/Mini<\/a>, Hyundai<\/a>, Mazda<\/a>, Kia<\/a>, Infiniti<\/a>, and more.<\/p>\n\n\n\n

P2190 on a Hyundai Santa Fe<\/h3>\n\n\n\n

The PCM detects the fuel trim value at idle under detecting conditions. Once the PCM detects that the average value exceeds the limit at a certain amount of time, it’ll trigger the code. The check engine light will usually turn on if the malfunction lasts two consecutive driving cycles.<\/p>\n\n\n\n

\n
\n
\n\"CarParts.com\"\n<\/div>\n
\n \n<\/form>\n<\/div>\n<\/div>\n\n\n\n

More on How Oxygen Sensors Work<\/h3>\n\n\n\n

To help you understand the code better, it’s best to refresh your knowledge of how oxygen (O2) sensors work.<\/p>\n\n\n\n

O2 sensors calculate the concentration of combustibles (or the amount of oxygen) in the exhaust gasses leaving the engine. O2 sensors were first used in the production of automobiles in the 1970s, and by the 1980s, they were widely used.<\/p>\n\n\n\n

A low voltage signal from the oxygen sensor indicates that there is not enough oxygen in the exhaust, indicating that the engine is running rich. The PCM responds by decreasing the amount of fuel delivered to the engine.<\/p>\n\n\n\n

A high voltage signal, on the other hand, indicates high oxygen content and warns that the engine is running lean, causing the PCM to increase fuel to compensate for the excess air.<\/p>\n\n\n\n

If you need more clarity about P2190 and similar codes, you can read our technical discussion about fuel trims and “off idle.”<\/a><\/p>\n\n\n\n

Note:<\/em><\/strong> The definition of the P2190 code can be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.<\/em><\/p>\n\n\n\n

What Are the Common Causes of the P2190 Code?<\/h2>\n\n\n\n