OBD-II code · Powertrain (generic, extended)
P208E Reductant Injection Valve Stuck Closed (Bank 1 Unit 1)
The DEF injection valve at bank 1 unit 1 does not open when commanded — typically crystallised DEF blocks the nozzle, no flow into the SCR.
Is it safe to drive with P208E?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyNozzle crystallised
- PossibleValve seized
- 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
- 0.7–3 h
- Emissions test
- Likely to fail
- Parts involved
- Reductant Injection Valve
Related codes
- P208FReductant Injection Valve Stuck Closed (Bank 2 Unit 1)
- P208BReductant Pump A Control Performance/Stuck Off
- P208CReductant Pump A Control Circuit Low
- P208DReductant Pump A Control Circuit High
- P2090Camshaft Position B Actuator Control Circuit Low (Bank 1)
- P2091Camshaft Position B Actuator Control Circuit High (Bank 1)
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.