Powertrain, generic

P0E0F Generator Inverter Power Supply A Circuit/Open

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P0E0F is set when the generator inverter loses one of its internal supplies, supply A, or the line to it is interrupted. Which supply carries the letter A is up to the manufacturer; usually it is the low-voltage feed of the gate drivers that switch the power transistors. No manufacturer documents P0E0F publicly. The drive motor counterpart P0C0B shows how such a check works at GM: the IGBT module itself reports a bias fault once its gate drive supply drops below a threshold, which the 2011 Volt treats as Type A after a single 2.08 ms event and a 2019 table after 0.168 s within a 0.2 s window. CARB requires circuit monitoring of hybrid components. Without gate drive supply the generator cannot be controlled at all. Low and high variants: P0E10, P0E11; supply B: P2CC5.

Likely causes

Gate driver supply inside the inverter failed
12 V feed, fuse or connector of the inverter interrupted
Deep 12 V dips during start-up

Symptoms

  • Hybrid system warning light and MIL on
  • Generator out of operation, vehicle may not reach ready state

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€100–4,500
Time0.5–5 h

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

Parts involved

generator inverter awiring harnesshybrid control module

Related codes

P0E10P0E11P2CC5P0C0B

References: law.cornell.edu, gsi.ext.gm.com, gsi.ext.gm.com.