EGR Temperature Sensor Circuit High
The EGR temperature sensor is reading too high of a voltage or temperature.
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What it means (plain English)
Your engine's EGR system has a temperature sensor that helps monitor exhaust gas temperature but it's seeing a voltage that indicates the temperature is too high, which can lead the engine computer to modify performance.
What the computer is actually seeing
The engine control module (ECM) reads a voltage signal from the EGR temperature sensor. A normal signal should be between 0.5V and 4.5V. If the signal spikes above 4.5V, the ECM triggers SPN 3560.
What a healthy reading looks like
EGR temperature sensor should read between 0.5V and 4.5V; above 4.5V triggers this code.
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.
- 1Check the wiring and connectors for the EGR temperature sensor for damage or loose connections. Fix any issues found before further testing.
- 2Using a multimeter, measure the voltage on the EGR temperature sensor's connector while the engine is running. A normal reading should be between 0.5V and 4.5V.
- 3If the voltage exceeds 4.5V, replace the EGR temperature sensor and clear the fault codes. If it's under 0.5V, inspect the wiring and connectors again for any grounding issues. If all checks are normal, consider replacing the ECM.
Common causes
- Faulty EGR temperature sensor
- Wiring issues (shorts or opens) in the sensor circuit
- Exhaust leaks affecting sensor readings
- Corrosion or poor connections in the wiring harness
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Moderate severity means it can be driven, but fix it soon to avoid poor performance and possible emissions issues.
Will the code come back after repair?
If the root problem is fixed and no wiring or sensor issues remain, the code should not come back.
Why is this code related to EGR issues?
EGR systems modulate exhaust flow to reduce emissions, and high temperature readings can disrupt that function.
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