Powertrain, generic · Hybrid propulsion

P0C36 Hybrid/EV Battery Temperature Sensor F Circuit High

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

P0C36 means the voltage from battery temperature sensor F sits above its valid range. With GM's NTC thermistor and pull-up, an open circuit, a broken wire or an unplugged connector pulls the input up and reads as an impossibly cold cell group. GM's 2016 table fails it below −69 °C in 8 of 10 samples, the Volt battery tables of 2016 to 2019 below −40 °C for 1.4 s within 2 s, and the eAssist table above 4.63 V, about −45 °C, in 7 of 10 samples, each as Type B, two trips. Volt bulletin 18-NA-342 lists it as sensor 6 circuit high voltage and links the F group to a Battery Too Cold message. The counterpart for a short to ground is P0C35. Expect limited power and possibly pack heating that is not needed.

Likely causes

Open circuit or unlatched connector of sensor F
Thermistor F open internally
Module software setting the code falsely in the cold (GM Volt)

Symptoms

  • MIL after two trips
  • Battery too cold, plug in to warm message
  • Reduced electric power

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€100–2,500
Time1–5 h

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

Parts involved

hv battery temp sensor fwiring harnessbms

Related codes

P0C35P0C34P0C33P0C37P0BC5

References: gsi.ext.gm.com, gsi.ext.gm.com, gsi.ext.gm.com, static.nhtsa.gov.