P2485Exhaust Gas Temperature Sensor Circuit/Open (Bank 2 Sensor 5)
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2485 reports a circuit or open-circuit fault at a fifth exhaust temperature probe on bank 2. That requires a V engine with two separate aftertreatment lines carrying five probes each, a layout no public maker document shows. No manufacturer documents P2485. The closest reference is GM's single-bank diesel, which watches its probe 5 on bank 1 and folds the open circuit into the High code P2482 (above 1400 Ω in 2018, beyond 100 MΩ in 2025). CARB merely requires that every such input be monitored for circuit faults. If the code appears, check that the scan tool's probe numbering matches the vehicle, then the connector and lead. Bank 1 equivalent: P2480; Low/High of the same probe: P2486/P2487.
- What you may notice
- Warning lamp on
- No valid value for this probe
- Likely causes
- LikelyInterrupted lead between control unit and probe
- PossibleConnector left unplugged after exhaust work
- PossibleProbe element open
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €40 – €350
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.