P2096 After the catalyst, the mixture on bank 1 is reading lean
3 owner reports and 214 manufacturer filings across 108 model years from Chevrolet, Chrysler, Ford, Genesis and others.
Where P2096 shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports | Parts |
|---|---|---|---|---|
| 2020 Jeep Wrangler | Engine | 6 | — | |
| 2019 Jeep Wrangler | Engine | 6 | — | |
| 2018 Jeep Wrangler | Engine | 6 | — | |
| 2021 Jeep Wrangler | Back Over Prevention | 4 | — | |
| 2018 Mazda CX-5 | Engine | 4 | — | |
| 2016 Mazda CX-5 | Engine | 4 | — | |
| 2017 Subaru Legacy/Outback | Electrical System | 4 | — | Battery → |
| 2016 Subaru Legacy/Outback | Engine | 4 | — | |
| 2019 Chevrolet Malibu | Electrical System | 3 | — | Battery → |
| 2016 Chevrolet Malibu | Equipment | 3 | — | |
| 2019 Mazda CX-5 | Engine | 3 | — | |
| 2018 Mazda Mazda6 | Engine | 3 | — | |
| 2020 Subaru Ascent | Engine | 2 | 1 | |
| 2017 Chevrolet Corvette | Equipment | 2 | — | |
| 2016 Chevrolet Corvette | Equipment | 2 | — | |
| 2017 Chrysler 300 | Back Over Prevention | 2 | — | |
| 2016 Chrysler 300 | Back Over Prevention | 2 | — | |
| 2017 Chrysler Pacifica | Back Over Prevention | 2 | — | |
| 2021 Jeep Gladiator | Engine | 2 | — | |
| 2020 Jeep Gladiator Pickup | Engine | 2 | — | |
| 2016 Land Rover Discovery | Power Train | 2 | — | |
| 2016 Land Rover Range Rover | Power Train | 2 | — | |
| 2019 Mazda CX-3 | Power Train | 2 | — | |
| 2019 Mazda Mazda3 | Power Train | 2 | — | |
| 2019 Mazda Mazda6 | Engine | 2 | — |
Showing the 25 model years where P2096 appears most; it is on file for 108 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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P2096 by make
The same record, one make at a time: the model years, bulletins and owner reports that name P2096 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.
Diagnostic scan identified multiple transmission-related codes including P0137, P0700, P2096, P1867, P0867, P2723, and P0841
Out of nowhere my airbag light start blinking, I ran the code and got a P2096 which apparently is not related to the airbag I took it to Firestone to get it checked out and they told me they cannot do anything about the airbag light I…
214 manufacturer filings name P2096. 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 P2096.
- 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).
- A25-006 Service bulletin2025-07-22 · Engine
- "Service Bulletin - Burning oil smell from under hood and/or MIL comes on with DTC P2096 and/or P2270 due to possible porosity in the cylinder head cover bolt hole may cause oil to weep out onto Bank 1 (Rear Cylinder Head) catalytic converter and oxygen sensor. Some cases will turn on the MIL, setting DTC P2096 and/or P2270."
- 22-FL-001G Service bulletin2022-02-16 · Fuel System, Gasoline
- This bulletin provides information related to the ECM(Engine Control Module) software update for 3.5L GDI engine equipped vehicles that experience check engine light, no drivability issue, and with either of the following DTC found stored in the ECM: ⢠P2096 - Post Catalyst Fuel Trim - System Too Lean (Bank 1). ⢠P2098 - Post Catalyst Fuel Trim - System Too Lean (Bank 2).
- S1918000008RevC Service bulletin2021-08-12 · Back Over Prevention
- Customer?s complaint may include a MIL-on with one or more of the following DTCs (Active, Pending, or Stored) in the PCM: P0133, P0137, P0171, P0300, P2096. The root cause could be due to oil leaking from Bank 1 valve cover seal on to the 1/2 (Bank 1 downstream) O2 sensor. This can adversely affect the 1/2 O2 sensor signal reading and lead to listed DTCs. Before performing normal diagnostic routin
- S1918000008 Service bulletin2021-08-12 · Engine And Engine Cooling
- Customer?s complaint may include a MIL-on with one or more of the following DTCs (Active, Pending, or Stored) in the PCM: P0133, P0137, P0171, P0300, P2096. The root cause could be due to oil leaking from Bank 1 valve cover seal on to the 1/2 (Bank 1 downstream) O2 sensor. This can adversely affect the 1/2 O2 sensor signal reading and lead to listed DTCs. Before performing normal diagnostic routin
What P2096 means
Source: SAE J2012 / OBD-IIAfter the catalyst, the mixture on bank 1 is reading lean.
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 P2096
Source: NHTSA files and the OBD-II standardCan I keep driving with P2096 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.