Powertrain
generic / SAE
P0AFF
System Voltage Too Low for Voltage Step Down Conversion
The system input voltage is too low to enable voltage step-down (buck) conversion to 12V. 12V system support compromised.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / numberA / FF
Possible causes
- Input voltage below conversion threshold high
- Converter input stage fault medium
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 400–2500 €
- Estimated time: 2–8 h
- Component: dcdc step down converter
- Component: aux 12v battery
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012