Powertrain
generic / SAE
P2181
Cooling System Performance
The engine cooling system does not reach or maintain the expected temperature within the diagnostic window — usually a stuck-open thermostat, but also a low coolant level or a stuck cooling fan that overcools the engine.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number1 / 81
Possible causes
- Thermostat stuck open high
- Coolant level low medium
- Cooling fan stuck on low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 80–400 €
- Estimated time: 0.5–2.5 h
- Component: thermostat
- Component: coolant temperature sensor
- Component: cooling fan
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012