OBD-II code · Powertrain (generic)

P0E37 DC/DC Converter Voltage Sensor B Range/Performance

The ECM detects a range/performance fault on the dc/dc converter voltage sensor b. Reading cannot be used reliably for control.

Is it safe to drive with P0E37?

The car may go into limp mode (reduced power). Get it diagnosed before a long trip.

Common causes

  • Most likelySensor characteristic drifted
  • PossibleSensor mounting displaced
  • Less likelySensor element aged beyond calibration window

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 B, Wiring Harness, Dcdc Converter

Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.