Powertrain, generic · Hybrid propulsion

P0D0F Battery Charging System Negative Contactor A Stuck Closed

Check engine lightOn
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

P0D0F flags negative charging contactor A as stuck closed: it still conducts after the open command, usually through welded contacts or a misjudged state. Ford stores it in the BECM of the 2021–2022 Mustang Mach-E together with main-contactor codes such as P0AA1 and P0AA4; bulletins 22-2178 and 23-2020 replace the high-voltage battery junction box and reprogram the BECM, and a flat 12 V battery or the Stop Safely Now warning may accompany it. Stellantis lists P0D0F-00 for the Grand Cherokee 4xe with a MIL, partly a false alarm, and cures it with BPCM software (0817922, 08-006-25). GM sets it together with P0D08 on the 2023 Lyriq after an interrupted AC session (23-NA-096). A Toyota patent checks such sticking via charge-port voltage. The positive side is P0D08, the opposite fault P0D10.

Likely causes

Faulty high-voltage battery junction box with the charging contactors (Ford Mach-E)
Battery module software misjudging the contactor (Stellantis 4xe, GM Lyriq)
Welded contactor contacts

Symptoms

  • Malfunction indicator lamp or wrench lamp
  • Stop Safely Now message or no ready mode (Ford)
  • Discharged 12 V battery

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€100–3,500
Time0.5–6 h

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

Parts involved

bcs neg contactor awiring harnessbms

Related codes

P0D08P0D0EP0D10P0AA1P0AA4

References: static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov.