Engine Error
P0117
Engine Coolant Temperature Sensor 1 Circuit Low
Severity
High
Symptoms
Radiator fans run constantly, engine overheats or indicates hot, hard starting
Common Causes
- Defective Engine Coolant Temp (ECT) sensor
- Short circuit in ECT wiring
- Low engine coolant
- Air pocket in cooling system
How to Fix
- 1 Replace ECT sensor
- 2 Repair shorted wiring
- 3 Top off coolant and bleed air from system
- 4 Test sensor connector voltage
Estimated Repair Cost
USD
$50
–
$250
ECT Sensor: $80 - $200