Powertrain
generic / SAE
P2AFD
Engine Coolant Temperature Sensor 4 Range/Performance
The engine coolant temperature 4 signal does not match plausibility checks against related signals. Sensor drift.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberA / FD
Possible causes
- Sensor characteristic drifted high
- Sensor mounting displaced from reference path medium
- Sensor element aged beyond calibration window low
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: 50–250 €
- Estimated time: 0.3–1.5 h
- Component: engine coolant temperature sensor 4
- Component: wiring harness
- Component: ecm
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012