Exhaust Gas Temperature Sensor 2
This code indicates a problem with the exhaust gas temperature sensor 2.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
This means the computer is seeing a temperature reading from the exhaust gas temperature sensor that doesn't make sense, like it's way too high or too low.
What the computer is actually seeing
The ECM expects a voltage reading from the sensor that correlates with a temperature range of around 300°F to 1,200°F (149°C to 649°C).
What a healthy reading looks like
Voltage should be between 0.5V (around 250°F/121°C) and 4.5V (around 1,500°F/815°C).
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. Check the wiring and connectors to the exhaust gas temperature sensor 2 for damage or corrosion. If any issues are found, repair or replace as needed.
- 22. Use a scan tool to read the live data. Compare the voltage reading from the exhaust gas temperature sensor 2 to the expected voltage ranges (0.5V to 4.5V). If the reading is out of this range, proceed to the next step.
- 33. If the voltage is incorrect, swap the sensor with one known to be working, or test with a multimeter to verify sensor function. If the problem resolves, replace the sensor.
- 44. If the sensor is functioning correctly, check for exhaust leaks or damage in the exhaust system that may affect sensor readings.
Common causes
- Faulty exhaust gas temperature sensor 2
- Wiring issues or poor connections
- Corroded terminals or connector
- Exhaust leaks or damage in the exhaust system
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this fault code?
It's not recommended to drive long-term with this code, as it can affect emissions and turbo performance.
Will this code come back after clearing it?
If the underlying issue isn't fixed, yes, the code will typically return.
Why does this code sometimes pair with other SPN codes?
Multiple codes can indicate a common issue, such as a wiring problem or sensor fault affecting the entire system.
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