Engine Error
P2181
Cooling System Performance
Severity
High
Symptoms
Engine overheating, temperature gauge erratic, heater blows cold
Common Causes
- Thermostat stuck open or closed
- Failed engine coolant temperature sensor
- Low engine coolant
- Failing water pump
How to Fix
- 1 Replace thermostat
- 2 Replace ECT sensor
- 3 Fill and bleed the cooling system
- 4 Inspect and replace water pump
Estimated Repair Cost
USD
$50
–
$800
Thermostat: $100 - $250; Water pump replacement: $400 - $800