P2241
O2 Sensor Positive Current Control Circuit Low Bank 2 Sensor 1
Fuel & air metering (O2 sensor)
Generic OBD-II
Medium
What it means
P2241 means the positive pump-current control circuit for the bank 2, sensor 1 wide-band oxygen sensor is reading low. Wide-band air/fuel sensors use a small controlled current to measure the mixture precisely, so a low signal here leaves the ECM without a trustworthy reading and upsets fuel trim. It's usually a wiring fault (open or high resistance), a bad connection, or a failing sensor.
Medium
Can I keep driving? Drivable, but a faulty wide-band O2 sensor throws off fuel control, hurting economy and emissions and possibly causing rough running; repair soon.
Common symptoms
What you'll notice
- Check-engine light on
- Rough or uneven idle
- Increased fuel consumption
- Engine surge or hesitation
Common causes
Most likely first
- Faulty wide-band (air/fuel ratio) oxygen sensor on bank 2, sensor 1Likely
- Pump-current control wire open, shorted, or high-resistanceCommon
- Poor connection or corrosion at the O2 sensor connectorCommon
- Wiring damage where the harness routes near the exhaustLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and check for companion bank 2 O2 codes (P2240, P2242).
- Inspect the bank 2 sensor 1 connector and wiring for corrosion, chafing, or a loose pin.
- Measure the positive current-control circuit for opens or high resistance against spec.
- Confirm the sensor's reference and ground circuits are intact.
- Replace the wide-band O2 sensor if the circuit tests good but the reading stays low, then clear and re-test.
FAQ
Quick answers
Is it safe to drive with P2241?+
Yes for short trips, but fuel control and emissions are affected while it's active, so don't put off the repair.
Can I just clear P2241?+
You can, but a low current-control signal from a wiring or sensor fault will set it again.
Related codes
Often seen with P2241
Read & clear P2241 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX