Powertrain, generic · Hybrid propulsion

P0C93 Hybrid/EV Battery Temperature Sensor K Circuit Range/Performance

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

P0C93 compares sensor K with its neighbours: the reading is electrically fine but too far from the pack average. GM's 2016 hybrid table 16OBDG02 sets it when the absolute difference exceeds 25.00 °C for 50 samples out of 67 taken every 25 ms, roughly 1.7 s, rated Type B; the check is suspended whenever a low, high or erratic code for the battery sensors is active. GM's 2011 table lists K as sensor 11. Mitsubishi handles it on the 2018 Outlander PHEV as a rationality fault of sensor [10]: it needs 3,600 s of soak, a pack temperature from −30 to 60 °C and a 13 °C deviation lasting 0.32 s, tested once per drive. A thermistor that drifted or lost contact with its cells is the typical finding.

Likely causes

Thermistor K reading off while still electrically valid
Sensor K lifted off its cell group
Real temperature spread from uneven coolant flow or a weak cell

Symptoms

  • Warning lamp, often first noticed after a cold start
  • Charging and discharging power limited

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€80–2,500
Time0.5–5 h

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

Parts involved

hv battery temp sensor kwiring harnessbms

Related codes

P0C92P0C94P0C95P0C96P0C8EP0C98

References: gsi.ext.gm.com, gsi.ext.gm.com, mitsubishitechinfo.com.