P2EAEReductant Injection Valve Circuit Range/Performance 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
- P2EAE concerns the second DEF injector on bank 1. Open, low and high circuit faults have their own codes, P2053 to P2055; here the circuit works, yet its signal does not fit a properly moving valve. GM uses it on the 2023 3.0 L Duramax LZ0 to detect a stuck second injector: from the current trace of each injection it takes the second derivative, in which the armature movement shows up as a kink, and fails the test when too few samples cross a threshold that depends on injector temperature and battery voltage, judged over 5 of 10 samples, type A with MIL after one trip. Delphi's patent US11280245 explains this kink method and its limits with chopped drive voltage. The 2025 GM table no longer lists P2EAE. Causes are urea crystals, a seized armature and contact faults.
- What you may notice
- Check engine lamp on
- DEF system warning
- Higher NOx emissions
- Likely causes
- LikelyArmature of the second injector sticking from urea crystals
- PossibleCorroded contacts distorting the current trace
- RareInjector coil with changed characteristics
- 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.