Powertrain
generic / SAE
P2058
Reductant Injection Valve Circuit High (Bank 2 Unit 2)
The DEF injection valve drive line at bank 2 unit 1 reads above the expected voltage — short to B+ or open ground.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number– / 58
Possible causes
- Short to B+ 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: shop recommended
- Estimated cost: 120–900 €
- Estimated time: 0.7–3 h
- Component: reductant injection valve
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012