Powertrain
generic / SAE
P2D2B
Hybrid/EV Battery Pack Coolant Temperature Sensor A/B Correlation
The signals of the HV battery pack coolant temperature sensors A and B do not correlate within the calibrated tolerance. One sensor drifts or installation offset between channels.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberD / 2B
Possible causes
- One sensor characteristic drifted high
- Harness incorrectly swapped between channels medium
- Pack cell imbalance approaching service threshold low
Symptoms
- EV/hybrid system warning light on
- Reduced power output or limp mode
- Charging may fail or be slowed
- Reduced electric range
Inspection / repair
- Difficulty: easy
- DIY: possible
- Estimated cost: 80–350 €
- Estimated time: 0.3–2 h
- Component: hybrid battery coolant temp sensor a
- Component: hybrid battery coolant temp sensor b
- Component: bms
- MIL / check engine light
Sources
References
sae:J2012