Powertrain
generic / SAE
P05F0
Reductant Pump Supply Voltage Circuit High
Same as P05EE with the supply voltage above the plausible range. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number5 / F0
Possible causes
- Supply voltage above design range high
- Connector pins corroded - high contact resistance low
- Supply wire pinched against B+ source low
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)
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 120–600 €
- Estimated time: 0.8–2.5 h
- Component: reductant pump
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012