Powertrain, generic · Hybrid propulsion

P0D1E Hybrid/EV Battery Pack Coolant Control Valve B Control Circuit High

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P0D1E is the short-to-voltage counterpart for coolant control valve B: the controller sees its drive line high at a moment when it should be low. P0D1E is not described in any public manufacturer document. For valve A, GM documents the matching test on the Chevrolet Volt 2011 and Cadillac ELR 2016: driver line 1 reads high while the valve should be stopped or moving forward, system voltage above 9 V or 10.2 V, 90 out of 100 checks, Type B with the lamp lit on the second trip. Because the check runs in the opposite direction of travel to the low test, the stored code already hints at which wire is affected. Pinched wires touching a supply line or a driver stage that will not switch off are the usual suspects. Battery temperature control falls back to a default. Short to ground is P0D1D, open circuit P0D1A.

Likely causes

Valve B driver wire pinched against a supply line
Output stage in the controlling module stuck high
Damaged or contaminated connector bridging two pins

Symptoms

  • MIL after two trips (where the maker uses a two-trip code)
  • Battery thermal management in fallback mode, charging or power limited

Repair estimate

DifficultyHardWorkshop job
Parts and labour€80–600
Time0.5–3 h

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

Parts involved

hv battery pack coolant valve bwiring harnessbms

Related codes

P0D1DP0D1AP0CE3P0DEC

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