Exhaust Gas Temperature Sensor 1/3 Correlation (Bank 1)
Exhaust Gas Temperature Sensor 1/3 Correlation (Bank 1): the value does not correlate with the related sensor or expected pattern. The ECU uses this temperature to protect the catalyst and diesel particulate filter.
Affected components
- Exhaust gas temperature sensor
- Exhaust pipe
Common causes
- High likelihood: One EGT sensor drifts
- Medium likelihood: Exhaust leak between the two sensor positions
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.