Engine Error
P0115
Engine Coolant Temperature Circuit Malfunction
Severity
Medium
Symptoms
Rough running, black smoke, rich running engine
Common Causes
- Faulty ECT sensor
- Broken wiring
- Corroded sensor terminals
- Bad PCM
How to Fix
- 1 Replace ECT sensor
- 2 Inspect wiring harness
- 3 Refill engine coolant
- 4 Test sensor resistance
Estimated Repair Cost
USD
$80
–
$250
ECT sensor: $50 - $100; Labor: $100