Exhaust Gas Temperature Sensor Circuit Range/Performance (Bank 2 Sensor 1)
The EGT sensor at bank 2 sensor 1 reads in range but plausibility check fails — slow response, stuck reading, or value does not track other EGT sensors during a regeneration.
Affected components
- Exhaust gas temperature sensor
Common causes
- High likelihood: Sensor drift over service life
- Low likelihood: Sensor element aged beyond calibration window
- Low likelihood: Sensor mounting loose - signal damping
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.