EGR Temperature Sensor Circuit High
EGR temperature sensor voltage is higher than expected.
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What it means (plain English)
The EGR temperature sensor is sending a voltage signal that indicates a temperature much higher than normal, which suggests it could be faulty or responding to extreme conditions.
What the computer is actually seeing
The engine control module (ECM) is reading a voltage from the EGR temperature sensor that exceeds the predefined threshold, typically above 4.5 volts, indicating a potential sensor failure or wiring issue.
What a healthy reading looks like
Normal EGR temperature sensor output voltage is typically 0.5 to 4.5 volts.
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. Inspect the EGR temperature sensor wiring for damage or shorts. Check connections at both the sensor and ECM. If visually damaged, repair or replace accordingly. Decision: If wiring is good, move to step 2; if wiring is damaged, repair and retest.
Common causes
- Short circuit in wiring to sensor
- Faulty EGR temperature sensor
- Poor electrical connections at sensor or ECM
- High EGR temperatures due to blockage or malfunction
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Drivability may be impacted; it's best to fix this soon as it can affect engine performance.
Will this code come back after clearing?
It can return if there's an underlying issue with the sensor or wiring that hasn’t been fixed.
Why do I see this code with others like SPN 3555?
These codes can be related as they often indicate problems within the EGR system, affecting various components.
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