P1141 BUICK, CADILLAC, CHEVROLET, GMC: HO2S HEATER CONTROL CIRCUIT BANK 1 SENSOR 2
POST UPDATED IN June, 2023
P1141 BUICK, CADILLAC, CHEVROLET, GMC: HO2S HEATER CONTROL CIRCUIT BANK 1 SENSOR 2
Oxygen sensors (HO2S) are an important part of the vehicle’s fuel system. These devices measure the oxygen present in the exhaust and then send that data to the Engine Control Module, which uses it to regulate the air/fuel ratio. The information provided by these devices is also used to check the performance of the Catalytic Converter, an essential component of the emissions system.
The reading efficiency of the oxygen sensors is determined by their temperature. Considering this, the sensors include a heating element, which contributes to reducing the time it takes to reach the necessary temperature.
The setting of diagnostic code P1141 OBD2 occurs when the circuit controlling the heater of HO2S number 2 of bank 1 experiences performance failures, directly affecting the sensor.
The reasons for which the P1141 OBDII fault code is stored are:
To resolve the DTC P1141 OBD2 code you must do the following: