Powertrain
generic / SAE
P05EE
Reductant Pump Supply Voltage Circuit Open
The supply line that powers the AdBlue dosing pump is open. Without supply the pump cannot deliver reductant pressure - dosing is suspended and NOx emissions can drift out of compliance.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number5 / EE
Possible causes
- Supply open or relay defective high
- Pin pushed back out of connector body low
- Cracked solder joint inside the module or sensor 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
- Component: reductant pump supply relay
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012