P2128
2 owner reports and 9 manufacturer filings across 8 model years from Ford, Infiniti.
Where P2128 shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2024 Ford F-250 Super Duty | Engine And Engine Cooling | 2 | — |
| 2024 Ford F-350 Super Duty | Engine And Engine Cooling | 2 | — |
| 2024 Ford F-450 Super Duty | Engine And Engine Cooling | 2 | — |
| 2026 Ford Bronco | Power Train | 1 | — |
| 2025 Ford F-150 | Electrical System | — | 1 |
| 2026 Ford Ranger | Power Train | 1 | — |
| 2025 Ford Ranger | Electrical System | 1 | — |
| 2018 Infiniti QX30 | Fuel/Propulsion System | — | 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.
The repairing Ford dealership, diagnosed a factory-born "OPEN" in the main wiring harness (#14A005) behind the dash (DTCs P2128/P2138)
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names P2128. Quoting the document number at a service desk is often the fastest route to a diagnosis someone has already written down.
- SSM 550442026-07-27 · Power Train
- Some 2025-2026 Bronco/Ranger vehicles may exhibit an illuminated powertrain malfunction (wrench) indicator with diagnostic trouble codes (DTC) P2122, P2123, P2127, P2128, and/or P2138 stored in the powertrain control module (PCM). The vehicle may or may not exhibit a perceived lack of power intermittently. This may be due to an issue with the following connectors associated with the accelerator pe
- SSM 533752025-02-12 · Unknown Or Other
- Some 2023-2025 F-Super Duty vehicles may exhibit an illuminated powertrain malfunction (wrench) indicator with diagnostic trouble codes (DTC) P2122, P2123, P2127, P2128, and/or P2138 stored in the powertrain control module (PCM).
- SSM 524202024-04-05 · Engine And Engine Cooling
- Some 2023-2024 F-Super Duty vehicles may exhibit an illuminated powertrain malfunction (wrench) indicator with diagnostic trouble codes (DTC) P2122, P2123, P2127, P2128, and/or P2138 stored in the powertrain control module (PCM). The vehicle may or may not exhibit a perceived lack of power intermittently. Perform a wiggle test of connector C1580 at the left rear of the engine compartment while the
What P2128 means
Source: SAE J2012 / OBD-IIP2128 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 P2128
Source: NHTSA files and the OBD-II standardCan I keep driving with P2128 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.