Exhaust Gas Recirculation (EGR) Temperature Sensor A Range/Performance Problem
EGR temperature sensor is reporting an unusual reading.
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What it means (plain English)
The EGR system is supposed to reduce nitrogen oxide emissions by circulating some exhaust gases back into the intake. If the temperature reading from the sensor is outside the expected range, the computer is suspecting something is wrong.
What the computer is actually seeing
The Engine Control Module (ECM) sees EGR temperature values that are too high or too low during normal operation, usually outside the range of 80°C to 130°C (176°F to 266°F).
What a healthy reading looks like
EGR temperature should typically be around 80°C to 130°C (176°F to 266°F) when the vehicle is at operating temperature.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Check wiring and connectors to the EGR temperature sensor for damage or corrosion. Repair or replace if necessary.
- 22. Measure the resistance of the EGR temperature sensor with a multimeter. Expected resistance is typically around 200-300 ohms at room temperature (20°C). Check the manufacturer's specifications for specific values.
- 33. Start the engine and monitor EGR temperature using a scan tool. It should reach approximately 80°C to 130°C as the engine warms up. If it does not, replace the EGR temperature sensor.
- 44. Inspect the EGR valve for proper operation. Manually open and close the valve to see if it moves freely. Clean or replace if blocked or stuck.
- 55. If all sensors and the EGR valve are functioning properly, check EGR passages for blockages.
Common causes
- Faulty EGR temperature sensor
- Wiring issues (shorts, opens, corrosion)
- EGR valve sticking or malfunctioning
- Blocked EGR passages
- Faulty ECM or software issue
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's moderate severity; you can drive, but fix soon to avoid emissions issues.
Will this code come back after clearing?
If the underlying issue isn't fixed, it likely will return.
Why does this code pair with other EGR codes?
EGR faults often affect multiple systems, leading to several related codes.
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