Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 3
EGT sensor 3 on bank 1 reports values that are not plausible for current operating conditions. Either drift or wiring resistance changes the signal away from the expected value.
Affected components
- Exhaust gas temperature sensor
- Egt wiring
Common causes
- High likelihood: EGT sensor drift
- Medium likelihood: Increased wiring resistance
- Low likelihood: Sensor element aged beyond calibration window
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
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.