Powertrain, generic · Hybrid propulsion

P0D10 Battery Charging System Negative Contactor A Stuck Open

Check engine lightOn
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

P0D10 means negative charging contactor A does not close when told to, so the charging path never gets its return line and the session fails. Ford names it in the BECM of the 2021–2023 Mustang Mach-E next to main-contactor codes; the bulletins (23-2020, 23-2257) replace the high-voltage battery junction box and update the BECM. GM's preliminary PIT6083 for the 2024 Lyriq links P0D09 and P0D10 to very long charging sessions and advises disconnecting the cord once a day for 20 minutes or more until new software arrives. Stellantis lists both codes for the Wagoneer S and Charger Daytona, where a no-start can follow, and handles them with BPCM updates. Welding on this side is P0D0F, the control circuit P0D11, the positive counterpart P0D09. Expect charging to stop.

Likely causes

Faulty high-voltage battery junction box with the charging contactors (Ford Mach-E)
Battery module software needing an update (GM Lyriq, Stellantis)
Contactor failing to close or burnt contacts

Symptoms

  • Charging does not start or stops
  • Malfunction indicator lamp and high-voltage service message
  • Vehicle may not start (Lyriq, Stellantis)

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

P0D09P0D0EP0D0FP0D11P0AA5

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