OBD-II code · Powertrain (generic)
P0C38 DC/DC Converter Temperature Sensor A Circuit
The ECM detects a circuit fault on the dc/dc converter temperature sensor a. Reading cannot be used reliably for control.
Is it safe to drive with P0C38?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySensor failed
- PossibleWiring or connector fault
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 A, Wiring Harness, Dcdc Converter
Related codes
- P0C3DDC/DC Converter Temperature Sensor B Circuit
- P0C35Hybrid/EV Battery Temperature Sensor F Circuit Low
- P0C36Hybrid/EV Battery Temperature Sensor F Circuit High
- P0C37Hybrid/EV Battery Temperature Sensor F Circuit Intermittent/Erratic
- P0C39DC/DC Converter Temperature Sensor A Range/Performance
- P0C3ADC/DC Converter Temperature Sensor A Low
- P0C3BDC/DC Converter Temperature Sensor A High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.