OBD-II code · Powertrain (generic)
P0E31 DC/DC Converter Voltage Sensor A Circuit
The ECM detects a circuit fault on the dc/dc converter voltage sensor a. Reading cannot be used reliably for control.
Is it safe to drive with P0E31?
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
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–5 h
- Emissions test
- Usually unaffected
- Parts involved
- Dcdc Voltage Sensor A, Wiring Harness, Dcdc Converter
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.