Possible causes

– Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2
– Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit fuse
– Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit open shorted to ground
– Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit poor electrical connection
– Faulty Engine Control Module (ECM)

Tech notes

The code means that there is a problem with the heater element circuit of the heated oxygen sensor. The control module monitors how long it take the sensor to warm up and start sending an adequate signal. The code is triggered when the sensor is taking too long to warm up. Water getting inside the heated oxygen sensor connector can caused the heated oxygen sensor fuse to blow. Before replacing the sensor, check for the condition of the heated oxygen sensor fuse and connectors. If the sensor and connector are OK, replacing the O2 Sensor 1 usually takes care of the problem

When is the code detected?

Current amperage in the rear heated oxygen sensor heater circuit is out of the normal range.

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)
– Possible higher than usual fuel Consumption

P0141 Description

Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. The faster the heated oxygen sensor reaches that temperature the faster the sensor will start sending an accurate signal to the Engine Control Module (ECM).
In order to achieve the require temperature, a heater element is included inside the heated oxygen sensor. The ECM controls the heated oxygen sensor heater element based on signals from the engine coolant temperature and engine load. The ECM controls the heater element circuit by allowing current flow to ground.
The ECM monitors the voltage signal received through the heater element circuit and determines the state of the circuit by comparing the voltage detected with the factory specifications.

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P0141 Information for specific makes

P0141 2002 DODGE NEON
P0141 ACURA
P0141 HONDA
P0141 BMW
P0141 CHRYSLER
P0141 JEEP
P0141 DODGE
P0141 FORD
P0141 HYUNDAI
P0141 ISUZU
P0141 KIA
P0141 LEXUS
P0141 TOYOTA
P0141 SCION
P0141 MAZDA
P0141 MITSUBISHI
P0141 VOLKSWAGEN
P0141 AUDI
P0141 SATURN
P0141 NISSAN
P0141 INFINITI
P0141 CADILLAC
P0141 BUICK
P0141 CHEVROLET
P0141 GMC
P0141 HUMMER
P0141 PONTIAC
P0141 SATURN