P246EExhaust Gas Temperature Sensor Circuit (Bank 1 Sensor 4)
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- P246E is the general code for the fourth exhaust temperature probe on bank 1, usually the last one in the aftertreatment line. Ford's diesels give it a model check rather than an electrical one: after a cold start the measured EGT14 value may differ from the modelled temperature by no more than 80 °C, the comparison lasting 200 to 400 s and the deviation having to persist for 20 s. Dedicated low and high signal faults of the same probe go to P2470 and P2471, and sensor-to-sensor plausibility to P246F. Volvo Trucks lists P246E-15 among the EGT faults on VNL tractors whose fix is replacing the affected exhaust temperature sensor (RD24-034). CARB requires continuity and rationality checks on emission-relevant inputs. A bad value often pauses regeneration or DEF dosing.
- What you may notice
- MIL on
- Value of the last exhaust probe deviates from expectation
- Regeneration or DEF dosing suspended
- Likely causes
- LikelyProbe aged or failed, reading far from the model
- PossibleProbe loose or not reaching into the gas stream
- RareExhaust leak near the probe cooling the reading
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €40 – €350
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.