P0641
0 owner reports and 30 manufacturer filings across 15 model years from Bentley, Cadillac, Chevrolet, GMC.
Where P0641 shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports | Parts |
|---|---|---|---|---|
| 2020 Chevrolet Silverado | Engine | 5 | — | |
| 2020 GMC Sierra | Engine | 5 | — | |
| 2024 Bentley Continental | Engine | 2 | — | |
| 2023 Bentley Continental | Engine | 2 | — | |
| 2022 Bentley Continental | Electrical System | 2 | — | Battery → |
| 2021 Bentley Continental | Engine | 2 | — | |
| 2018 Cadillac CTS-V | Electrical System | 2 | — | Battery → |
| 2018 Chevrolet Camaro | Electrical System | 2 | — | Battery → |
| 2018 Chevrolet Corvette | Electrical System | 2 | — | Battery → |
| 2024 Bentley Flying Spur | Engine | 1 | — | |
| 2023 Bentley Flying Spur | Engine | 1 | — | |
| 2022 Bentley Flying Spur | Engine | 1 | — | |
| 2021 Bentley Flying Spur | Electrical System | 1 | — | Battery → |
| 2017 Cadillac XTS | Fuel/Propulsion System | 1 | — | Fuel pump → |
| 2016 Cadillac XTS | Fuel/Propulsion System | 1 | — | Fuel pump → |
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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P0641 by make
The same record, one make at a time: the model years, bulletins and owner reports that name P0641 on that maker’s vehicles.
What it gets filed under
30 manufacturer filings name P0641. 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 P0641.
- 2081243/2 Service bulletin2026-07-16 · Engine
- Service Info: Engine Control Module (ECM) 5V Reference Circuits. Customer statement / workshop findings: This TPI provides supplementary technical information to support diagnosis of ECM 5V reference circuit DTCs. It details the sensors associated with each reference circuit (A, B, and C) and outlines relevant guidance to assist in isolating faults when any of the following DTCs are stored in the
- PIT5713A Service bulletin2020-05-07 · Engine And Engine Cooling
- This Preliminary information communicates an issue with the engine wiring harness shorting at the left front cylinder head causing any of the following issues: - IPC gauges sweeping while driving - Several IPC warning messages and MIL displayed - Any combination of the following DTC's: U0073 U0100 U0101 U0121 U0128 U0129 U0131 U0140 U0146 U0422 U2413 P0107 P0117 P0119 P0641 C2A07
- PIP5724 Service bulletin2020-04-21 · Engine And Engine Cooling
- This Preliminary information communicates The vehicle may have an SES lamp with any of the following DTC P06DA, P06DB, P06DC, P250A, P0300, P0340, P0341, P0335, P0336, P0641, P0011, P0010, P2088, P2089, and/or P2230. Possible crank no start or a stall. Possible wiring jumper harness pintched between the X154 connector bracket and the front engine cover on lower left side of the engine.
- PIT5713 Service bulletin2019-09-30 · Engine And Engine Cooling
- This Preliminary information communicates an issue with the engine wiring harness shorting at the left front cylinder head causing any of the following issues: - IPC gauges sweeping while driving - Several IPC warning messages and MIL displayed - Any combination of the following DTC's: U0073 U0100 u0101 u0121 u0128 U0129 u0131 U0140 U0146 U0422 U2413 P0107 P0641 C2A07
- PIP5553A Service bulletin2018-09-11 · Electrical System
- This Preliminary information communicatesThe vehicle may have an ses lamp with any of the following DTC P06DA, P06DB, P06DC, P250A, P0300, P0340, P0341, P0335, P0336, P0641, P0011, P0010, P2088, P2089, and/or P2230. Possible crank no start or a stall. possible wiring jumper harness chaffed at the bolt at the X154 connector on lower left side of the frount cover.
- PIP5553 Service bulletin2018-02-02 · Electrical System — Starter Assembly
- This Preliminary information communicatesThe vehicle may have an ses lamp with any of the following DTC P06DA, P06DB, P06DC, P06B6, P06B7, P250A, P0300, P0340, P0341, P0335, P0336, P0641, P0011, P0010, P2088, P2089, and/or P2230. Possible crank no start or a stall. possible wiring jumper harness chaffed at the bolt at the X154 connector on lower left side of the frount cover.
What P0641 means
Source: SAE J2012 / OBD-IIP0641 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 P0641
Source: NHTSA files and the OBD-II standardCan I keep driving with P0641 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.