P2034 — Exhaust Gas Temperature Sensor Circuit (Bank 2 Sensor 2)
A general electrical fault is reported on the exhaust gas temperature (EGT) sensor at bank 2 sensor 2 — open, short, or out of plausibility. EGT sensors monitor catalyst, DPF, and turbocharger inlet/outlet temperatures.
General code reference. Confirm the definition and diagnostic procedure for your vehicle's year, model and engine. A stored code alone does not identify a failed part.
Affected components
- Exhaust gas temperature sensor
- Egt harness
Possible causes to check
These are possible checks, not a ranked diagnosis. Follow the vehicle manufacturer's test procedure before replacing parts.
- EGT sensor element failed
- Open wire in EGT harness
- Connector corroded by exhaust heat
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
Related codes
Sources
Check each reference's vehicle and model-year scope. General background links do not establish which fault is most likely on your vehicle.
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.