Exhaust Gas Temperature Sensor Circuit (Bank 1 Sensor 2)
The exhaust gas temperature (EGT) sensor at position 2 on bank 1 — typically downstream of the catalyst or before the DPF — reports an implausible signal. EGT sensors protect the turbocharger and DPF from over-temperature and time the regeneration cycle.
Affected components
- Egt sensor
- Egt wiring
Common causes
- High likelihood: EGT sensor failed
- Medium likelihood: Wiring damaged by heat
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.