P2690Cylinder 5 Injector Data Incompatible
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P2690 is the first code of the series that a four-cylinder engine cannot set; it needs at least five cylinders. It reports that the flow correction for the cylinder 5 injector is absent or rejected by the controller. GM uses it in its 2025 six-cylinder diesel table 25OBDG04B as well as in its V8 diesel tables, Type A, with the value stored under DID $64. Ford's 2023 diesel summary, which spans the 3.0 L V6 and 6.7 L V8, includes it too. On V engines the location of cylinder 5 varies: Ford counts one bank first, GM alternates sides, so the service data must be checked before touching an injector. Expect a lit MIL rather than drivability trouble.
- What you may notice
- Check engine light on
- Rarely uneven running
- Likely causes
- LikelyCylinder 5 injector replaced without entering its code
- PossibleCode entered for the wrong cylinder because of the bank numbering
- RareInjector code programming interrupted
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €50 – €250
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.