Powertrain, generic · Hybrid propulsion

P0DF1 Generator Inverter Temperature Sensor B Circuit Intermittent/Erratic

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

P0DF1 means the signal of generator inverter temperature sensor B drops out or jumps for short moments and then looks normal again. Typical triggers are temperature steps faster than the power module could physically heat or cool, or brief readings that resemble an open line. No manufacturer documents P0DF1 publicly: Ford's monitors for its generator inverter sensor cover only opens and shorts (P0BCE, P0BCF), and Mitsubishi has no intermittent code for the corresponding V-phase sensor at all. CARB still expects inverter thermal inputs to be monitored. Because the fault comes and goes, freeze frame data and a wiggle test of the inverter harness tell more than swapping parts. A steady fault on this sensor would be logged as P0DF0, P0DF5 or P0DF6 instead.

Likely causes

Loose or fretted terminal in the inverter connector
Harness chafing or vibration damage near the power unit
Intermittent contact inside the inverter module

Symptoms

  • Warning light that comes and goes
  • Occasional short loss of generator power
  • Fault often not reproducible at the workshop

Repair estimate

DifficultyHardWorkshop job
Parts and labour€80–4,000
Time1–5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

generator inverter temp sensor bwiring harnesshybrid control module

Related codes

P0DF0P0DF4P0DF5P0DF6P0DF3P0BD0

References: law.cornell.edu, fordservicecontent.com, mitsubishitechinfo.com.