OBD-II code · Powertrain (generic, extended)
P2EAF Reductant Injection Valve Stuck Closed Bank 1 Unit 2
The reductant injection valve on bank 1 unit 2 is stuck closed. No DEF/AdBlue can be dosed on this unit.
Is it safe to drive with P2EAF?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyValve mechanically seized closed
- PossibleDEF crystallization blocks valve
- Less likelyCarbon or debris buildup preventing free movement
Symptoms
- Check engine light or NOx warning on
- AdBlue/DEF level or quality warning
- Possible no-start countdown after ignore period
- Failed emissions inspection (NOx)
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–5 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Reductant Injection Valve B1 U2
Related codes
- P2EACActive Radiator Air Flow Control Module A Performance
- P2EADReductant Metering Unit 2 Performance
- P2EAEReductant Injection Valve Circuit Range/Performance Bank 1 Unit 2
- P2EB0Throttle Valve Intake Air Pressure Sensor Circuit
- P2EB1Throttle Valve Intake Air Pressure Sensor Circuit Low
- P2EB2Throttle Valve Intake Air Pressure Sensor Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.