P26F3Starter Relay B Stuck Off
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P26F3 reports that starter relay B does not switch through when commanded, so the start sequence that depends on it cannot complete. It is the one code of this group with a public manufacturer case: an FCA STAR case for the Jeep Gladiator, released in March 2022, describes a check engine light and a no-start with P26F3, P00FD and P0562 stored, caused by loose power cables at the power control relay; tightening them to specification was the repair. That points to a missing supply on the load side rather than a failed relay. Otherwise burnt relay contacts or a coil that no longer pulls in are typical. P26F2 covers the opposite case, a relay B that will not release, and P26E4 to P26E6 its control circuit.
- What you may notice
- Check engine light
- Engine does not start or crank
- Further codes for low system voltage or battery state
- Likely causes
- LikelyLoose power cable at the relay or power distribution unit
- PossibleBurnt contacts in starter relay B
- PossibleWeak battery or low system voltage so the relay does not pull in
- RareOpen coil in relay B
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Easy · Often possible to do yourself.Typical cost: €0 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.