Exhaust Gas Recirculation (EGR) Temperature Sensor 2
EGR temperature sensor 2 is showing an out-of-range reading.
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What it means (plain English)
The second temperature sensor in the EGR system is not reading correctly, which could affect emissions control and engine performance.
What the computer is actually seeing
The EGR temperature readings are outside normal operating parameters, likely below 0.5V or above 4.5V.
What a healthy reading looks like
EGR temperature sensor output should typically range from 0.5V to 4.5V, corresponding to temperatures of 0°C to 150°C (32°F to 302°F).
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 wiring and connectors for the EGR temperature sensor 2. Look for any signs of wear, corrosion, or disconnection.
- 22. Use a multimeter to check the voltage output of EGR temperature sensor 2. Expect a voltage between 0.5V and 4.5V at operating temperature.
- 33. If the voltage is outside the expected range, replace the EGR temperature sensor 2 and retest.
- 44. If the sensor voltage is normal, check the EGR valve for proper operation. Look for any blockage or malfunction, which could influence sensor readings.
Common causes
- Faulty EGR temperature sensor 2
- Wiring issues between the sensor and the ECM
- Faulty EGR valve causing incorrect temperature readings
- Corrosion or damage in connectors
Typical repair cost
$$$
Related codes
Frequently asked questions
Can I still drive my vehicle with this code?
Yes, but it's advised to fix the issue soon to avoid potential performance and emissions problems.
Is this fault likely to return after clearing?
If the root cause is not resolved, it may return after clearing the code.
Why does this code sometimes pair with others like SPN 426?
Common issues in the EGR system can cause multiple sensors to show faults, indicating a systemic problem.
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