Enhanced Exhaust Gas Temperature Sensor 2
Exhaust gas temperature sensor 2 is reading out of range.
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What it means (plain English)
Sensor 2 measures how hot the exhaust gases are, and if it shows a temperature that's too high or too low, the computer thinks there's a problem with the exhaust system.
What the computer is actually seeing
The engine control module (ECM) expects the exhaust gas temperature to stay within specific limits, usually in the range of 300°F to 1200°F (about 149°C to 649°C) while the engine is running. If it sees a reading below 200°F (93°C) or above 1300°F (704°C), it sets the fault code.
What a healthy reading looks like
Exhaust gas temperatures should be between 300°F and 1200°F (149°C to 649°C) during normal operation; anything outside this range triggers the 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 frays or corrosion.
- 2Inspect the exhaust gas temperature sensor for physical damage.
- 3Use a scan tool to monitor the actual temperature reading from the sensor while the engine is running. Is it outside the expected range?
- 4If the wiring and sensor are good but readings are still off, check for exhaust leaks near the sensor location.
- 5If all checks are within range but the code returns, consider replacing the sensor.
Common causes
- Faulty exhaust gas temperature sensor
- Open or shorted wiring to the sensor
- Corroded or loose electrical connector
- Contaminated sensor caused by oil or soot
- Issues with the exhaust system, like leaks or blockages
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's not ideal. While it may run, the truck could be underperforming and may damage components down the line.
Will this code come back if I clear it?
If the underlying issue isn't fixed, it will likely come back.
Why does this code pair with SPN 2425?
Both codes relate to exhaust temperature sensor readings; the pairs often indicate problems in the same system.
Working a real vehicle right now?
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