EGR Temperature Sensor Circuit High
The EGR temperature sensor is reading too high.
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What it means (plain English)
The EGR temperature sensor measures the temperature of the exhaust gas recirculated back into the engine. When it reads too high, it means there's an issue, which can cause excessive heat in the engine.
What the computer is actually seeing
The sensor should send a voltage between 0.5V and 4.5V to the ECU based on temperature. A reading typically above 4.5V is flagged as a fault.
What a healthy reading looks like
Normal operation: 0.5V to 4.5V; Fault triggered: over 4.5V or under 0.5V.
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. Visually inspect the EGR temperature sensor connector and wiring for damage or corrosion. Reconnect if needed.
- 22. Check the EGR temperature sensor's voltage output while the engine is running. Use a multimeter and expect between 0.5V and 4.5V.
- 33. If the sensor voltage is above 4.5V, replace the EGR temperature sensor. If it's normal, continue diagnostics.
- 44. Inspect the exhaust system for leaks or blockages that may affect EGR operation.
- 55. Clear the code, run the engine to see if the issue returns.
Common causes
- Faulty EGR temperature sensor
- Wiring or connector issues in the EGR sensor circuit
- Exhaust gas leaks impacting sensor readings
- ECU malfunction
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's drivable but you may experience poor fuel economy and performance issues. It's best to fix soon.
Will this code come back after clearing it?
If the underlying issue isn’t resolved, yes, it will likely return.
Why does this code sometimes appear with other codes?
It often pairs with other EGR related codes, indicating an overall EGR system issue.
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