P2085 — Exhaust Gas Temperature Sensor Circuit Intermittent (Bank 1 Sensor 2)
The EGT sensor at bank 1 sensor 2 signal jumps or drops out intermittently — typically a connector or chafed wire near the exhaust manifold heat zone.
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
Possible causes to check
These are possible checks, not a ranked diagnosis. Follow the vehicle manufacturer's test procedure before replacing parts.
- Connector loose
- Connector with intermittent contact under vibration
- Harness routed against vibrating component
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.