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P0141 is a diagnostic trouble code (DTC) for "O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $70.00. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $30.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)
P0141 is the OBD-II generic code indicating the Engine Control Module (ECM) has tested the O2 sensor heater circuit and detects a problem with the bank 1 sensor 2 oxygen sensor heater circuit.
Follow these simple guidelines to prevent misdiagnosis:
Check the O2 wire harness for water entry into the harness cover causing sensor shorts.
Check the O2 sensor for oil or coolant contaminants from engine leaks.
Scan the new O2 sensor to make sure the heater circuit works properly after replacement.
Check the removed O2 sensor for damage from a defective catalyst by breaking the sensor or clogging sensor holes.
The code is for the sensor behind the catalyst on the bank 1 of the engine.
O2 sensors are the fuel control feedback the ECM needs to properly control the injectors.
The ECM may stay in open loop until the O2 system is repaired or the O2 sensor starts working again.
The engine stuck in open loop will run extra rich and will burn more fuel and start to carbon up.
The O2 sensor heater circuit for bank 1 sensor 2 is used to heat the internal parts of the O2 sensor on bank 1 sensor 2 only, and the code can be isolated just to this sensor.
YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.