P1197
Exhaust Gas Temperature Sensor 4 Performance Engine Running
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$28–89 (est.)
Symptoms
- Check Engine light comes on
- Reduced engine power
- Increased fuel consumption
- Unstable engine operation at idle
- Exhaust system overheating
Causes
- EGT 4 temperature sensor malfunction
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Contact corrosion
- Engine control unit malfunction
How to Fix
- Check the integrity of the sensor circuit
- Inspect connectors and contacts for corrosion
- Check the resistance of the EGT sensor
- Replace faulty EGT temperature sensor
- Reset the error code and check the system operation