Q: P2097 trouble code - 2012 Chevrolet Captiva Sport

asked by on

HOW TO REPAIR POST CATALYST FUEL TRIM SYSTEM HIGH LIMIT CODE P2097

My car has 83830 miles.
My car has an automatic transmission.

Hi there. For your vehicle’s P2097 (post catalyst fuel trim system too rich bank 1) code, this can be difficult to diagnose. For all intents and purposes, the vehicle’s PCM (powertrain control module) has recognized too much fuel and not enough air at the post O2. The O2 sensor(s) provides this information to the PCM. A scanner with parameter capabilities will be necessary to accurately diagnose the problem.

The long term fuel trim(s) will show whether the PCM is attempting to correct any condition in fuel delivery. Driving the system lean or rich to compensate for the information provided by the O2 sensor(s). This parameter is in percentages and mid-range is 10-12%. Above the mid-range, the PCM is driving rich. Below the mid-range, the PCM is driving lean. The O2 sensors generate their own voltage 0-1volt, based on oxygen content in the exhaust. Above .5volt indicates rich (low oxygen content). Below .5volt indicates lean (high oxygen content). The pre-catalyst O2 sensor need to be operational and accurate before condemning, the post-catalyst O2 sensor.

It could be, a faulty O2 sensor. It could be, a connection or wiring harness fault, It could be, a faulty PCM. I recommend having your vehicle’s P2097 trouble code diagnosed and repaired by a certified technician, such as one from YourMechanic.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. P2097 trouble code - 2012 Chevrolet Captiva Sport

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: What does it mean when my Chevy captivia 2014 will not turn over and when I was driving it it cut off and said engine reduced

The knocking noise is usually an indication of an internal failure of some kind. This may be related to many different things, however the reduced engine power mode usually indicates that the computer has detected something wrong and is attempting...

Q: Q: Gas not getting to the engine

An easy way to test for a failed fuel pump is to have a certified mechanic, like one from YourMechanic, spray a little bit of starting fluid into the vehicles intake and try to start it again. If this starts...

Q: No throttle response on 2012 dodge avenger

In the future, please include the motor size. Thanks. Your electronic throttle system consists of the throttle pedal assembly with an accelerator pedal position sensor, the throttle body which consist of a TPS (Throttle Position Sensor), throttle plate actuator,...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...