What code does a bad engine coolant temp sensor throw?
A bad engine coolant temperature (ECT) sensor can trigger several diagnostic trouble codes (DTCs) in a vehicle's onboard computer system. The specific code thrown will depend on the nature of the problem with the ECT sensor, but common codes include P0115, P0116, P0117, and P0118.
Diagnostic Trouble Codes for a Bad ECT Sensor
Here are some of the most common diagnostic trouble codes associated with a faulty engine coolant temperature sensor:
- P0115 - Engine Coolant Temperature Circuit Malfunction - This code indicates a problem with the ECT sensor circuit, such as a short or open circuit.
- P0116 - Engine Coolant Temperature Range/Performance Problem - This code suggests the ECT sensor is not providing accurate temperature readings, possibly due to a sensor failure or improper calibration.
- P0117 - Engine Coolant Temperature Sensor Circuit Low Input - This code indicates the ECT sensor is reading a temperature that is lower than expected, which could mean the sensor is faulty or the wiring is damaged.
- P0118 - Engine Coolant Temperature Sensor Circuit High Input - This code suggests the ECT sensor is reading a temperature that is higher than expected, which may be caused by a sensor failure or wiring issue.
These are some of the most common diagnostic trouble codes related to a bad engine coolant temperature sensor. The specific code thrown will depend on the nature of the problem with the sensor.
