P0217
PowertrainTemperature Sensorcritical severityEngine Overtemperature Condition
What P0217 Means
The PCM has detected that the engine has exceeded the maximum allowable temperature.
Symptoms
- Check Engine Light
- Temp gauge in red zone
- Steam from engine
- Loss of power
- Possible engine damage
Common Causes
- Low coolant level
- Faulty thermostat
- Water pump failure
- Radiator blockage
- Cooling fan failure
- Head gasket failure
Diagnostic Steps
- Check coolant level immediately
- Test thermostat
- Inspect water pump
- Check radiator for blockage
- Test cooling fans
- Check for head gasket failure (combustion gas test)
Where to start: STOP DRIVING IMMEDIATELY. Allow engine to cool. Check coolant level first. Can cause catastrophic engine damage.
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