OBD-II code · Powertrain (generic)
P0C41 DC/DC Converter Temperature Sensor B Intermittent/Erratic
The ECM detects a intermittent/erratic fault on the dc/dc converter temperature sensor b. Reading cannot be used reliably for control.
Is it safe to drive with P0C41?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySensor connector not seated
- PossibleNoisy ground reference
- Less likelyConnector with intermittent contact under vibration
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Dcdc Converter Temp Sensor B, Wiring Harness, Dcdc Converter
Related codes
- P0C3CDC/DC Converter Temperature Sensor A Intermittent/Erratic
- P0C3EDC/DC Converter Temperature Sensor B Range/Performance
- P0C3FDC/DC Converter Temperature Sensor B Low
- P0C40DC/DC Converter Temperature Sensor B High
- P0C42Hybrid/EV Battery Pack Coolant Temperature Sensor A Circuit
- P0C43Hybrid/EV Battery Pack Coolant Temperature Sensor A Circuit Range/Performance
- P0C44Hybrid/EV Battery Pack Coolant Temperature Sensor A Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.