OBD-II code · Powertrain (generic, extended)
P2EB9 Reductant Injection Valve Circuit Range/Performance Bank 2 Unit 2
The reductant injection valve on bank 2 unit 2 reports a range/performance fault. Dosing accuracy on this unit is impaired.
Is it safe to drive with P2EB9?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyInjection valve partially clogged
- PossibleCoil resistance drifted
- Less likelySensor element aged beyond calibration window
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 B2 U2
Related codes
- P2EAEReductant Injection Valve Circuit Range/Performance Bank 1 Unit 2
- P2EB5Hybrid/EV Battery Inductive Charger Input Voltage Low
- P2EB6Hybrid/EV Battery Inductive Charger Input Voltage High
- P2EB7Replace 12V Battery
- P2EBBCrankcase Temperature Sensor Circuit
- P2EBCCrankcase Temperature Sensor Circuit Range/Performance
- P2EBDCrankcase Temperature Sensor Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.