P2241O2 Sensor Positive Current Control Circuit Low (Bank 2 Sensor 1)
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2241 reports the pump-current circuit of the bank 2 front wide-band sensor at too low a level, typically a grounded wire or a sensor that cannot pump enough oxygen. No manufacturer publicly documents P2241 with thresholds. The bank 1 twin P2238 is described by Saab for its 2.0 turbo, where the signal must climb past 1.7 V on overrun with the injectors off; a V engine would run the same logic per bank. Ford instead files a grounded pump-current wire under P0151 and keeps P2240 for the open line. CARB demands that fuel-control sensors be checked for broken or shorted circuits and for implausible readings, with separate codes where practical. P2240 is the open circuit, P2242 the high-side fault on bank 2. Bank 2 fuelling falls back to open-loop values.
- What you may notice
- Check engine light
- Higher fuel consumption from open-loop fuelling on bank 2
- Likely causes
- LikelyBank 2 pump-current wire shorted to ground
- PossibleAged bank 2 front sensor with weak pump cell
- RareFault in the ECM sensor interface for bank 2
- 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: €80 – €450
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.