P2097 After the catalyst, the mixture on bank 1 is reading rich
10 owner reports and 487 manufacturer filings across 213 model years from Buick, Cadillac, Chevrolet, Chrysler and others.
Where P2097 shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports | Parts |
|---|---|---|---|---|
| 2017 Chevrolet Malibu | Engine | 6 | 4 | |
| 2016 Chevrolet Malibu | Engine | 5 | 3 | |
| 2017 Chevrolet Volt | Electrical System | 6 | — | Battery → |
| 2016 Chevrolet Volt | Electrical System | 6 | — | Battery → |
| 2018 Cadillac ATS | Fuel/Propulsion System | 5 | — | Fuel pump → |
| 2017 Cadillac ATS | Equipment | 5 | — | |
| 2016 Cadillac ATS | Equipment | 5 | — | |
| 2018 Cadillac CTS | Equipment | 5 | — | |
| 2017 Cadillac CTS | Equipment | 5 | — | |
| 2016 Cadillac CTS | Equipment | 5 | — | |
| 2018 Chevrolet Traverse | Fuel/Propulsion System | 5 | — | Fuel pump → |
| 2016 Jeep Cherokee | Electrical System | 5 | — | Battery → |
| 2018 Cadillac CT6 | Equipment | 4 | — | |
| 2017 Cadillac CT6 | Equipment | 4 | — | |
| 2016 Cadillac CT6 | Equipment | 4 | — | |
| 2018 Chevrolet Camaro | Equipment | 4 | — | |
| 2017 Chevrolet Camaro | Equipment | 4 | — | |
| 2016 Chevrolet Camaro | Equipment | 4 | — | |
| 2018 Chevrolet Impala | Equipment | 4 | — | |
| 2017 Chevrolet Impala | Equipment | 4 | — | |
| 2016 Chevrolet Impala | Equipment | 4 | — | |
| 2019 Chevrolet Malibu | Electrical System | 3 | 1 | Battery → |
| 2019 Chevrolet Traverse | Fuel/Propulsion System | 3 | 1 | Fuel pump → |
| 2018 GMC Acadia | Equipment | 4 | — | |
| 2017 Subaru Legacy/Outback | Electrical System | 4 | — | Battery → |
Showing the 25 model years where P2097 appears most; it is on file for 213 in total.
A model year appears here because the code is named in its record, not because every one of these vehicles sets it. Counts are mentions in the federal files, not failure rates — nobody publishes the denominator.
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P2097 by make
The same record, one make at a time: the model years, bulletins and owner reports that name P2097 on that maker’s vehicles.
What it gets filed under
What owners said
Source: NHTSA complaint databaseOwners’ own words, one per nameplate, scrubbed of anything identifying. These are unverified reports filed with NHTSA — they are what was said, not a finding that it was true.
3 weeks after purchase engine light comes on with code P2097, then light cuts off a few days later, dealer states just needs computer update
487 manufacturer filings name P2097. Start with what the maker wrote down.
A code names the test that failed, not the part. A bulletin that names it is often a diagnosis someone has already written down — quote its number at the service desk.
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names P2097.
- 18-033-26 Service bulletin2026-02-27 · Power Train
- Flash: Powertrain Control Module (PCM) Updates **Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0300-00 - Multiple Cylinder Misfire - in Active or Stored status set during cold start catalyst heating. ● P0301-00 - Cylinder 1 Misfire - in Active or Stored status set du
- 18-021-26 Service bulletin2026-02-14 · Engine
- Flash: Powertrain Control Module (PCM) Updates Customers **must** experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle **must** SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0300-00 - Multiple Cylinder Misfire - in Active or Stored status set during cold start catalyst heating. ● P0301-00 - Cylinder 1 Misfire - in Active or Stored statu
- 18-228-25R Service bulletin2025-12-08 · Fuel/Propulsion System
- This bulletin announces the diagnostic procedures to be used when DTCs P2096 (POST CATALYST FUEL TRIM SYSTEM TOO LEAN BANK 1) and P2097 (POST CATALYST FUEL TRIM SYSTEM TOO RICH BANK 1) are detected by the Engine Control Module (ECM).
- 18-228-25 Service bulletin2025-11-20 · Engine
- This bulletin announces the diagnostic procedures to be used when DTCs P2096 (POST CATALYST FUEL TRIM SYSTEM TOO LEAN BANK 1) and P2097 (POST CATALYST FUEL TRIM SYSTEM TOO RICH BANK 1) are detected by the Engine Control Module (ECM).
- PIP4964F Service bulletin2025-05-29 · Unknown Or Other
- This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp on. Technician will find Diagnostic Trouble Code P2097 or P2099. Technician will need to perform an injector balance or Active Fuel Injector Tester prior to going further. Technician will also need to check for a small leak in the exhaust if pu
- 18-013-24 REV. C Service bulletin2024-06-20 · Power Train
- "Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0032 - O2 Sensor 1/1 Heater Circuit High. ● P2097 - Downstream Fuel Trim System 1 Rich. ● P0171 - Fuel System 1/1 Lean. ● P0300 - Multiple Cylinder Misfire. ● P06E4 - Control Modul
What P2097 means
Source: SAE J2012 / OBD-IIAfter the catalyst, the mixture on bank 1 is reading rich.
A stored code names the test that failed, never the part that caused it. It is the starting point of a diagnosis, not its conclusion — the same code has several possible causes and the cheap one is not always right.
Common questions about P2097
Source: NHTSA files and the OBD-II standardCan I keep driving with P2097 stored?
Nobody can answer that from the code alone, and a site that does is guessing. A steady light means a fault was logged and the car should be checked soon; a flashing light means a severe misfire — slow down and get it seen as soon as possible, because severe misfire can quickly damage the catalytic converter. The safe read of this page is the mileage and the components, not permission.
Does a code mean the car is recalled?
No. Recalls are filed by campaign and matched by VIN, and none of them are triggered by a scan tool. If you want to know whether an open recall applies to one specific vehicle, check the VIN at nhtsa.gov/recalls — that is the only source that settles it.
Why do the counts here differ from other sites?
Because these are not estimates. Every number on this page is a count of documents in NHTSA's own files: manufacturer communications that name the code in their filed summary, and owner complaints that name it in the narrative. We do not model, weight or extrapolate them.
Will clearing the code fix it?
Clearing turns the light off and erases the freeze-frame data a technician would have used to work out what happened. If the condition is still there the code returns, usually within a few drive cycles, and the diagnosis now starts from less information than before.