Powertrain
generic / SAE
P0C40
DC/DC Converter Temperature Sensor B High
The ECM detects a high fault on the dc/dc converter temperature sensor b. Reading cannot be used reliably for control.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / numberC / 40
Possible causes
- Signal wire shorted to B+ high
- Open sensor medium
Inspection / repair
- Difficulty: easy
- DIY: shop recommended
- Estimated cost: 120–600 €
- Estimated time: 0.5–3 h
- Component: dcdc converter temp sensor b
- Component: wiring harness
- Component: dcdc converter
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012