P015B
1 owner report and 135 manufacturer filings across 39 model years from Buick, Cadillac, Chevrolet, Ford and others.
Where P015B shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2016 Buick Regal | Engine And Engine Cooling | 6 | — |
| 2016 Cadillac ATS | Engine And Engine Cooling | 6 | — |
| 2016 Cadillac CT6 | Engine And Engine Cooling | 6 | — |
| 2016 Cadillac CTS | Engine And Engine Cooling | 6 | — |
| 2016 Chevrolet Malibu | Engine And Engine Cooling | 6 | — |
| 2018 Buick Envision | Engine And Engine Cooling | 5 | — |
| 2017 Buick Envision | Engine And Engine Cooling | 5 | — |
| 2018 Buick Regal | Engine And Engine Cooling | 5 | — |
| 2017 Buick Regal | Engine And Engine Cooling | 5 | — |
| 2016 Buick Verano | Engine And Engine Cooling | 5 | — |
| 2018 Cadillac ATS | Engine And Engine Cooling | 5 | — |
| 2017 Cadillac ATS | Engine And Engine Cooling | 5 | — |
| 2018 Cadillac CT6 | Engine And Engine Cooling | 5 | — |
| 2017 Cadillac CT6 | Engine And Engine Cooling | 5 | — |
| 2018 Cadillac CTS | Engine And Engine Cooling | 5 | — |
| 2017 Cadillac CTS | Engine And Engine Cooling | 5 | — |
| 2018 Chevrolet Camaro | Engine And Engine Cooling | 5 | — |
| 2017 Chevrolet Camaro | Engine And Engine Cooling | 5 | — |
| 2016 Chevrolet Camaro | Engine And Engine Cooling | 5 | — |
| 2018 Chevrolet Equinox | Engine And Engine Cooling | 5 | — |
| 2017 Chevrolet Malibu | Engine And Engine Cooling | 5 | — |
| 2018 GMC Terrain | Engine And Engine Cooling | 4 | — |
| 2018 Nissan Rogue | Equipment Adaptive/Mobility | 3 | — |
| 2019 Chevrolet Equinox | Engine And Engine Cooling | 2 | — |
| 2018 Chevrolet Malibu | Engine And Engine Cooling | 2 | — |
| 2019 GMC Terrain | Engine And Engine Cooling | 2 | — |
| 2019 Buick Envision | Engine And Engine Cooling | 1 | — |
| 2019 Buick Regal | Engine And Engine Cooling | 1 | — |
| 2019 Cadillac ATS | Engine And Engine Cooling | 1 | — |
| 2019 Cadillac CTS | Engine And Engine Cooling | 1 | — |
| 2016 Chevrolet Cruze | Electrical System | 1 | — |
| 2018 Ford EcoSport | Engine | — | 1 |
| 2018 Subaru Forester | Electrical System | 1 | — |
| 2017 Subaru Forester | Electrical System | 1 | — |
| 2016 Subaru Forester | Electrical System | 1 | — |
| 2019 Subaru WRX | Electrical System | 1 | — |
| 2018 Subaru WRX | Engine And Engine Cooling | 1 | — |
| 2017 Subaru WRX | Electrical System | 1 | — |
| 2016 Subaru WRX | Engine And Engine Cooling | 1 | — |
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.
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.
Got it coded that the car prompted and it was reading P015B which indicates bank 1 sensor 1 of O2 sensors experiencing a lean to rich response issue
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names P015B. Quoting the document number at a service desk is often the fastest route to a diagnosis someone has already written down.
- 09-78-212021-07-30 · Electrical System
- This bulletin announces the availability of Engine Control Module (ECM) reprograming files to correct DTC P015A and/or P015B.
- PIP5402E2019-10-22 · Engine And Engine Cooling
- This Preliminary Information communication provides the technician with the diagnosis and repair steps for a vehicle with a check engine light on with Diagnostic Trouble Code P015B or a reduced engine power message with Diagnostic Trouble Code P1101. Technician should look for a missing or damaged O-ring seal in the charge air cooler coupler.
- PIP5402D2018-07-25 · Engine And Engine Cooling
- This Preliminary Information communication provides the technician with the diagnosis and repair steps for a vehicle with a check engine light on with Diagnostic Trouble Code P015B or a reduced engine power message with Diagnostic Trouble Code P1101. Technician should look for a missing or damaged O-ring seal in the charge air cooler coupler.
- NTB18-0472018-06-28 · Equipment
- 2018 ROGUE SPORT; MIL ON WITH A/F RATIO SENSOR DTC(S) IF YOU CONFIRM The MIL is ON with one or more of the following Air/Fuel (A/F) Sensor DTCs stored: - P015A - A/F SENSOR1 (B1) (O2 sensor delayed response - rich to lean bank 1 sensor 1) - P015B - A/F SENSOR1 (B1) (O2 sensor delayed response - lean to rich bank 1 sensor 1) and There are no drivability issues. ACTION 1. Refer to step 6 i
- NTB18-0472018-06-28 · Engine And Engine Cooling
- 2018 ROGUE SPORT; MIL ON WITH A/F RATIO SENSOR DTC(S) IF YOU CONFIRM The MIL is ON with one or more of the following Air/Fuel (A/F) Sensor DTCs stored: - P015A - A/F SENSOR1 (B1) (O2 sensor delayed response - rich to lean bank 1 sensor 1) - P015B - A/F SENSOR1 (B1) (O2 sensor delayed response - lean to rich bank 1 sensor 1) and There are no drivability issues. ACTION 1. Refer to step 6 i
- NTB18-0472018-06-28 · Equipment Adaptive/Mobility
- 2018 ROGUE SPORT; MIL ON WITH A/F RATIO SENSOR DTC(S) IF YOU CONFIRM The MIL is ON with one or more of the following Air/Fuel (A/F) Sensor DTCs stored: - P015A - A/F SENSOR1 (B1) (O2 sensor delayed response - rich to lean bank 1 sensor 1) - P015B - A/F SENSOR1 (B1) (O2 sensor delayed response - lean to rich bank 1 sensor 1) and There are no drivability issues. ACTION 1. Refer to step 6 in
What P015B means
Source: SAE J2012 / OBD-IIP015B sits in the generic range of the OBD-II standard, so it means the same thing on every vehicle sold in the United States — but WhichTrim does not carry a definition for it and will not invent one. What is on this page is the record: who named it and on what.
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 P015B
Source: NHTSA files and the OBD-II standardCan I keep driving with P015B stored?
Nobody can answer that from the code alone, and a site that does is guessing. A steady light generally means the fault was logged and the vehicle is in a reduced-risk mode; a flashing light means stop soon, because a misfiring engine can destroy a catalytic converter in minutes. 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.