P2EAFReductant Injection Valve Stuck Closed Bank 1 Unit 2
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2EAF means the second DEF injector on bank 1 stays shut although it is commanded open, so the SCR stage it serves gets no reductant. It is the unit 2 counterpart of P208E. Control units spot the case in two ways. One looks at the coil current: when the armature lifts, the trace shows a small kink, and Delphi's patent US11280245 describes finding it even with chopped drive voltage. The other compares pump effort with the commanded flow; in Cummins' patent US9664092 a shortfall of 90 % or more stands for a stuck-closed injector or a blocked line. No manufacturer documents P2EAF publicly; GM's LZ0 files a stuck second injector under P2EAE instead. Usually crystallised fluid or corrosion holds the needle. NOx emissions rise and the vehicle may later limit speed.
- What you may notice
- Check engine lamp on
- DEF warning with countdown to speed limitation
- Higher NOx emissions
- Likely causes
- LikelyNeedle held by crystallised DEF
- PossibleCorrosion inside the injector after poor fluid or long standstill
- PossibleBlocked or frozen supply line to the second injector
- 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: €80 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.