OBD-II code · Powertrain (generic, extended)
P2241 O2 Sensor Pumping Current Circuit Low (Bank 2 Sensor 1)
The pumping-current line of the wide-band oxygen sensor on bank 2, sensor 1 is below the lower threshold. Wide-band sensors use a small pumping current to keep their measuring cell at lambda 1; a low value usually means an open or shorted pump cell.
Is it safe to drive with P2241?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyPump cell open or sensor failed
- PossiblePumping current line shorted to ground
- Less likelyConnector pins corroded - high contact resistance
Symptoms
- Check engine light on
- Increased fuel consumption
- Possible rough idle or hesitation
- Failed emissions test
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Oxygen Sensor Upstream B2, Oxygen Sensor Wiring
Related codes
- P2237O2 Sensor Pumping Current Circuit (Bank 1 Sensor 1)
- P2238O2 Sensor Pumping Current Circuit Low (Bank 1 Sensor 1)
- P2240O2 Sensor Pumping Current Circuit (Bank 2 Sensor 1)
- P223EO2 Sensor Reference Resistance Out Of Range (Bank 1)
- P223FO2 Sensor Reference Resistance Out Of Range (Bank 2)
- P2242O2 Sensor Pumping Current Circuit High (Bank 2 Sensor 1)
- P2243O2 Sensor Reference Voltage Circuit (Bank 1 Sensor 1)
- P2244O2 Sensor Reference Voltage Circuit Range/Performance (Bank 1 Sensor 1)
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.