P2241 — O2 Sensor Positive Current Control Circuit Low Bank 2 Sensor 1
P2241 — O2 Sensor Positive Current Control Circuit Low Bank 2 Sensor 1. A fault in the oxygen sensor circuit. The car is usually drivable while you plan the repair. Typical causes: damaged sensor wiring or connector, oil or coolant contamination of the sensor tip, ECM signal circuit fault.
powertrain (engine/transmission)
Is it safe to drive?
Short-term driving is OK You can usually drive for a while: the engine runs on a default fuel strategy, which costs you fuel and emissions. Fix it soon — prolonged driving with a bad O2 sensor can overheat and damage the catalytic converter.
How to diagnose with an OBD scanner
- Read the code and freeze frame Connect an OBD2 scanner, confirm P2241 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
- Check for companion codes and TSBs Related codes often reveal the real root cause. Also check manufacturer technical service bulletins (TSB) for your make and model — many P0xxx issues have factory fixes or software updates. Search by VIN on the manufacturer site or nhtsa.gov.
- Inspect wiring and connectors Visually inspect the wiring harness and connectors related to the oxygen sensor circuit for damage, corrosion, chafing or poor contact.
- Subsystem check Watch the sensor voltage in live data: a healthy upstream sensor switches rapidly between roughly 0.1 and 0.9 V.
- Subsystem check Measure heater resistance on the sensor connector and check the heater fuse and relay.
- Verify the repair Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P2241 does not return.
Approximate repair cost
Repair cost depends on which component actually failed. Typical scenarios for P2241 (parts and labor, USD, independent shop rates): Fix an exhaust leak near the sensor: $100–$300; Replace the oxygen sensor: $150–$450; Repair sensor wiring: $80–$250. Overall, fixing P2241 usually costs between $80 and $450. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.
Common questions
What does OBD2 code P2241 mean?
P2241 — O2 Sensor Positive Current Control Circuit Low Bank 2 Sensor 1. A fault in the oxygen sensor circuit. The car is usually drivable while you plan the repair. Typical causes: damaged sensor wiring or connector, oil or coolant contamination of the sensor tip, ECM signal circuit fault.
What is the most common cause of P2241?
The most common causes are: damaged sensor wiring or connector, oil or coolant contamination of the sensor tip, ECM signal circuit fault.
How do I diagnose P2241 myself?
Start with a scan: confirm P2241, save the freeze frame and note any companion codes. Then inspect the wiring and connectors related to the oxygen sensor circuit, and verify the suspect component against live data before buying parts.
How much does it cost to fix P2241?
Fix an exhaust leak near the sensor — $100–$300; Replace the oxygen sensor — $150–$450; Repair sensor wiring — $80–$250. Exact cost depends on the root cause, your vehicle and local labor rates — a proper diagnosis is the cheapest first step.
Will P2241 clear itself?
Sometimes P2241 clears after a few drive cycles if the fault was intermittent — for example a loose connector or a tank of bad fuel. The underlying cause usually remains, so the code tends to return. Clear it once; if it comes back, diagnose rather than erase it repeatedly.
What does P2241 mean?
When P2241 appears on a scan, it means the control module has flagged a problem in the oxygen sensor circuit: O2 sensor positive current control circuit low bank 2 sensor 1. The fault sits in the powertrain (engine/transmission) group of the OBD2 standard.
In this definition, “Bank 2” is the side of the engine opposite to cylinder 1 and “Sensor 1” is the upstream (before the catalytic converter) sensor. Mixing up banks and sensor positions is the most common DIY mistake with this code — verify the physical location before replacing anything.
To set P2241, the control module compares live readings of the oxygen sensor circuit against calibrated limits, usually over several drive cycles. Alongside the code it stores a freeze frame — a snapshot of rpm, load, coolant temperature and vehicle speed at the moment of failure. Reading that snapshot first saves diagnostic time.
What causes P2241?
- oil or coolant contamination of the sensor tip
- damaged sensor wiring or connector
- aged or contaminated oxygen sensor
- exhaust leak near the sensor
Common symptoms of P2241
- increased fuel consumption
- sluggish throttle response
- rough idle
- Check Engine Light on
- failed emissions test
How to diagnose P2241
- Connect an OBD2 scanner, confirm P2241 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
- Related codes often reveal the real root cause. Also check manufacturer technical service bulletins (TSB) for your make and model — many P0xxx issues have factory fixes or software updates. Search by VIN on the manufacturer site or nhtsa.gov.
- Visually inspect the wiring harness and connectors related to the oxygen sensor circuit for damage, corrosion, chafing or poor contact.
- Watch the sensor voltage in live data: a healthy upstream sensor switches rapidly between roughly 0.1 and 0.9 V.
- Measure heater resistance on the sensor connector and check the heater fuse and relay.
- Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P2241 does not return.
How to fix P2241
Start with the cheapest and most common causes before replacing expensive parts:
- Fix an exhaust leak near the sensor — $100–$300
- Replace the oxygen sensor — $150–$450
- Repair sensor wiring — $80–$250
How much does it cost to fix P2241?
Repair cost depends on which component actually failed. Typical scenarios for P2241 (parts and labor, USD, independent shop rates):
- Fix an exhaust leak near the sensor: $100–$300
- Replace the oxygen sensor: $150–$450
- Repair sensor wiring: $80–$250
Overall, fixing P2241 usually costs between $80 and $450. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.
Can you drive with P2241?
You can usually drive for a while: the engine runs on a default fuel strategy, which costs you fuel and emissions. Fix it soon — prolonged driving with a bad O2 sensor can overheat and damage the catalytic converter.