Powertrain, generic

P0E47 Hybrid/EV Battery Pack Voltage Sense E Circuit High

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P0E47 means pack voltage measurement E reports more voltage than the pack can reach even when fully charged. A sense lead touching a higher potential, a broken divider resistor or a damaged input of the measuring chip are the usual explanations; real overcharging is unlikely when only one channel shows it. P0E47 is not documented by any manufacturer in public. The 2013 GM two-mode hybrid pickups and SUVs test the analogous channel A against 430 V (P0ABD), using the same 300-of-400 counter at 10 ms and running the test only while the 12 V network sits between 9 and 18 V. CARB requires battery voltage sensors to be tested against plausible limits. Low and plausibility faults of channel E are P0E46 and P0E45. Expect a warning and restricted electric drive.

Likely causes

Sense lead of channel E chafed through and touching a higher potential
Broken divider resistor or lost reference in the measuring circuit
Damaged measuring input or software fault in the battery controller

Symptoms

  • MIL and hybrid warning on
  • Charging or regenerative braking restricted
  • Electric drive limited or blocked

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€100–2,500
Time1–6 h

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

Parts involved

hv battery pack voltage sense ewiring harnessbms

Related codes

P0E44P0E45P0E46P0E48P0E4CP0ABD

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