Powertrain, generic (extended)

P2D62 Battery Charging System Negative Contactor C Circuit

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P2D62 is the collective electrical code covering minus contactor C, which connects the return conductor of the third charging path to the traction battery. Neither the code nor the meaning of C is documented by any manufacturer. Separate switches in both poles are common on charging paths because only then can the inlet be fully isolated, and diagnosing the pair needs one pole held closed while the other is tested: a Hyundai quick-charge patent checks the plus relay first and then the minus relay against the voltage at the charging inlet, so a minus-side fault is pinned down separately. Under CARB, a plug-in hybrid must flag charging faults that disable or limit charging. Welded and non-closing cases are P2D63/P2D64, driver faults P2D65–P2D68, the plus side P2D5B. The charging mode via C is typically disabled.

Likely causes

Coil of minus contactor C open or shorted
Wiring or plug fault on the minus contactor
Module output stage or software

Symptoms

  • One charging mode unavailable
  • Charging warning in the cluster
  • Driving unaffected

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€150–1,800
Time1–6 h

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

Parts involved

bcs neg contactor cwiring harnessbms

Related codes

P2D63P2D64P2D65P2D5BP2BCBP0D0E

References: law.cornell.edu, patents.google.com, patents.google.com.