Exhaust Gas Temperature Sensor 2 - Above Normal Operating Range
The Exhaust Gas Temperature Sensor 2 is signaling a high temperature reading.
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What it means (plain English)
The Exhaust Gas Temperature Sensor 2 is reporting a temperature that's too high, which can indicate a potential overheating problem in the exhaust system or issues with the turbocharger or DPF.
What the computer is actually seeing
The computer monitors the temperature voltage input from Exhaust Gas Temperature Sensor 2. If the voltage exceeds the expected range (typically above 2.5V for a high temp condition), it triggers this fault code.
What a healthy reading looks like
For a normal functioning sensor, the voltage should be between 0.5V and 2.5V. Above 2.5V indicates high 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 the wiring and connector for Exhaust Gas Temperature Sensor 2 for damage or corrosion.
- 22. Inspect the exhaust system for leaks that could cause incorrect temperature readings. If found, repair the leak. If no leaks are present, proceed to step 3.
- 33. Use a scan tool to monitor the live data for Exhaust Gas Temperature Sensor 2. Compare the readings with expected temperature under operating conditions (should not exceed 900°F). If reading is excessive, replace the sensor.
- 44. Verify coolant levels and check for any signs of engine overheating. If engine is overheating, diagnose and repair cooling system issues before further action. If readings are normal, check turbocharger operation.
Common causes
- Faulty Exhaust Gas Temperature Sensor 2
- Exhaust leaks
- Faulty wiring or connector issues
- Overheating engine due to lack of coolant
- Issues with the turbocharger or DPF system
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It is not recommended to drive as the overheating may cause further damage to the engine or exhaust system.
Will this issue come back after resetting the code?
If the underlying problem isn't fixed, yes, the code will typically return.
Why is this code paired with other exhaust temperature sensor codes?
Exhaust temperature sensors are often monitored in pairs, and issues with the system may affect multiple sensors.
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