Code Definition

P2241 — O2 Sensor Positive Current Control Circuit Low Bank 2 Sensor 1

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P2241

P2241 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P2241 is stored, the module has detected a signal or supply voltage lower than the expected operating range; a bank-specific fault, meaning it applies only to one cylinder bank of a multi-bank engine; and a sensor-related fault — the reported value from the named sensor is out of spec.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P2241 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

P2241 is stored when the engine control module detects that the positive current control circuit for the upstream wide band oxygen sensor on bank 2 has fallen low. Bank 2 is the cylinder bank that does not contain cylinder number one, and sensor 1 is the sensor ahead of the catalytic converter, so this code always relates to the pre catalyst air fuel ratio sensor on the secondary bank of a V configuration or horizontally opposed engine. On Toyota and Lexus the equivalent factory title is Oxygen (A/F) Sensor Pumping Current Circuit Low, because the sensor measures by pumping oxygen ions across ...

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