Powertrain
generic / SAE
P2D2C
Engine Coolant Temperature Measurement System - Multiple Sensor Correlation
The signals of multiple engine coolant temperature sensors do not correlate within the calibrated tolerance. One sensor drifts or installation offset between channels.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberD / 2C
Possible causes
- One sensor characteristic drifted high
- Harness incorrectly swapped between channels medium
Symptoms
- Check engine light on
- Cooling fan runs constantly or not at all
- Cabin heater weak or excessively hot
- Possible long warm-up time or hard cold start
Inspection / repair
- Difficulty: easy
- DIY: possible
- Estimated cost: 80–350 €
- Estimated time: 0.3–2 h
- Component: engine coolant temperature sensor 1
- Component: engine coolant temperature sensor 2
- Component: ecm
- MIL / check engine light
Sources
References
sae:J2012