Exhaust Gas Temperature Sensor 1/2 Correlation (Bank 2)
EGT sensors 1 and 3 on bank 2 disagree by more than the allowed tolerance — one is reading off, or there is a real temperature gradient that exceeds the calibrated map (e.g. from a leaking exhaust joint between the two locations).
Affected components
- Exhaust gas temperature sensor
Common causes
- High likelihood: One EGT sensor drifts
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.