P2473Exhaust Gas Temperature Sensor Circuit (Bank 2 Sensor 4)
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P2473 covers the wiring of probe number four in the bank 2 exhaust line as a whole, so it only occurs on engines with two separate exhaust paths and a long sensor chain on each. The controller sets it when the probe line delivers a value it cannot assign to a clean low or high fault, for instance an open circuit or a sensor reporting an internal error. No maker documents P2473 publicly. The bank 1 counterpart P246E shows how it can be used: Ford's 2023 diesel summary compares that probe against a temperature model after a cold start. CARB demands circuit continuity checks on every emission-relevant input. For the driver it means a lit MIL and often a paused particulate filter regeneration.
- What you may notice
- MIL on
- No usable value for bank 2 probe 4 in live data
- Filter regeneration suspended
- Likely causes
- LikelyBroken wire or unplugged connector at the bank 2 probe
- PossibleProbe element burnt out
- RareFault in the control unit input stage
- 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: €20 – €350
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.