Powertrain, generic · Hybrid propulsion

P0C96 Hybrid/EV Battery Temperature Sensor K Circuit Intermittent/Erratic

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

P0C96 flags an unsteady sensor K signal, the kind of noise a loose contact produces while the value still sits inside its valid band. GM describes the monitor in 16OBDG02 and 18OBDG02: each 100 ms sample adds to a running total of absolute changes across 10 samples, a total above 10 marks the window as failed, and 4 failed windows in 5 store the code, Type B, so two bad trips are needed. Supply over 10.2 V and intact communication with the battery interface module are prerequisites. Mitsubishi defines no erratic code for its sensor [10]. Moving the harness by hand while a scan tool shows the value often reveals the cause. P0C94 and P0C95 cover faults where the signal stays out of range.

Likely causes

Loose contact in the sensor K connector
Partly chafed sensor lead touching intermittently
Monitoring board with unstable supply or ground

Symptoms

  • Intermittent warning lamp
  • Short spells of reduced 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 kwiring harnessbms

Related codes

P0C92P0C93P0C94P0C95P0C91P0C9B

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