P2479Exhaust Gas Temperature Out of Range (Bank 1 Sensor 2)
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2479 applies the same temperature-limit idea to the second bank 1 probe. On the 2015 Ford 6.7L layout this is EGT12 at the oxidation catalyst outlet, where the exotherm of a regeneration shows up first, so a runaway burn or excessive post-injection can push the reading towards the limit. Ford's 2015 diesel summary lists P2479 alongside P2032 and P2033 and uses a high-side threshold of about 1150 °C; the 2023 edition no longer carries it. No other maker documents the code publicly. When the code appears together with circuit faults of the same probe, fix those first; on its own it calls for a check of injection and regeneration behaviour.
- What you may notice
- MIL on
- Regeneration aborted
- Reduced power
- Likely causes
- LikelyExcessive heat during regeneration, e.g. too much post-injection
- PossibleLeaking injector adding unburnt fuel to the catalyst
- RareProbe reading too high
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €50 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.