OBD-II code · Powertrain (generic, extended)
P208A Reductant Pump A Control Circuit/Open
The control line driving DEF pump A is open — no continuity through the motor or harness, dosing pressure cannot be built.
Is it safe to drive with P208A?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyPump motor winding open
- PossibleOpen wire to pump
- Less likelyPin pushed back out of connector body
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
- 1–3.5 h
- Emissions test
- Likely to fail
- Parts involved
- Reductant Pump, Reductant Pump Relay, Reductant Supply Harness
Related codes
- P20FAReductant Pump B Control Circuit/Open
- P2087Exhaust Gas Temperature Sensor Circuit Intermittent (Bank 2 Sensor 2)
- P2088Camshaft Position A Actuator Control Circuit Low (Bank 1)
- P2089Camshaft Position A Actuator Control Circuit High (Bank 1)
- P208BReductant Pump A Control Performance/Stuck Off
- P208CReductant Pump A Control Circuit Low
- P208DReductant Pump A Control Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.