P0141
O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
What it means
This means the heater inside the oxygen sensor located AFTER the catalytic converter on Bank 1 isn't working, preventing the sensor from reaching its operating temperature quickly.
Is it safe to drive?
It is generally safe to drive with a P0141 code as it primarily affects emissions monitoring, not engine performance. However, it will prevent your vehicle from passing an emissions test and should be fixed.
Most likely causes
Faulty O2 sensor (heater element failure)
highThe heater element within the O2 sensor is a common failure point due to heat cycles.
Wiring or connector issues to the O2 sensor
mediumDamaged, corroded, or loose wires/connectors can interrupt the heater circuit.
Blown fuse for the O2 sensor heater circuit
lowA blown fuse will cut power to the heater, though this is less common for individual O2 sensors.
Faulty PCM (rare)
lowIn very rare cases, the PCM itself may fail to provide power to the heater circuit.
Related help
Get the full diagnosis
Add your vehicle and see step-by-step repair help, recalls, and TSBs in Wrenchify.
Diagnose P0141 freeNo credit card required