Exhaust Gas Temperate Sensor 2
The second exhaust gas temperature sensor is reporting a fault.
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What it means (plain English)
The second exhaust gas temperature sensor is either not reading correctly or has failed, affecting the engine's ability to monitor exhaust temperatures properly.
What the computer is actually seeing
The engine computer expects the exhaust gas temperature (EGT) readings from Sensor 2 to be within specific ranges under different conditions. If it sees readings outside these ranges, it triggers this code.
What a healthy reading looks like
Expected temperature range: 100-900°F (38-482°C), sensor voltage between 0.5V and 4.5V depending on temperature.
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 wiring and connectors at the exhaust gas temperature sensor 2 for frays or corrosion. If damaged, repair or replace them.
- 22. Measure the voltage at the sensor harness while the engine is running. You should see 0.5V to 4.5V. If not, replace the sensor.
- 33. Inspect for any exhaust leaks upstream of the sensor that could skew readings. Seal any leaks found.
- 44. If wiring and sensor are good, conduct a performance test to determine if the sensor is accurately reading exhaust temperatures. Compare with expected values.
Common causes
- Wiring issues or bad connectors
- Faulty exhaust gas temperature sensor
- Exhaust leaks affecting readings
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's moderately severe; you can drive it but should address it soon to avoid potential overheating issues.
Will this code come back after clearing?
If the underlying issue isn't fixed, the code will likely return.
Why does this relate to other sensors?
It often works in conjunction with other exhaust temperature sensors to balance emissions and performance.
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