Powertrain, generic · Hybrid propulsion

P0DC6 Hybrid/EV Battery Cell Balancing Circuit G Stuck Off

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modeNo

P0DC6 is set when circuit G stays idle although balancing is requested, so group G cannot give up charge. Ford names the code in its 2015 hybrid OBD summary and decides it from the start-up voltage comparison of the six cells per circuit. Ford's own patent application US20130030617A1 shows why this matters during charging: a resistor placed across a nearly full cell routes some of the charging current past it, or the higher cells are bled down at the end and the pack is topped up again. With circuit G dead, neither route works, and the cells of G define when charging must stop. The driver sees a slowly shrinking electric range, not a breakdown. Detecting it is a CARB requirement for hybrids. Opposite: P0DC5.

Likely causes

Shunt resistor of group G open, no current can bypass the cells
Balancing switch of group G does not close on command
Pin backed out of the cell harness connector

Symptoms

  • Electric range shrinks gradually over weeks
  • Charging stops before the indicated target
  • Check engine light without immediate drivability change

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€300–4,500
Time1.5–8 h

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

Parts involved

hv battery cell balancing circuit gbms

Related codes

P0DABP0DC4P0DC5P0DC7P0DC2P0DE7

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