P012B Trouble Code

View P012B obd/2 error code description and symptoms.

The Transmission Range Sensor (also referred to as the PRNDL input an/or neutral safety switch) tells the transmission control module (TCM) an the engine control module (PCM) that the transmission is in park, reverse, neutral, drive, low, 2nd, 3rd etc. It is attached directly to the manual valve of transmission, so when the shift lever is moved from park to drive, the Transmission Range Sensor communicates this critical information to the above mentioned vehicle control module systems.

One example of this would be when an automatic vehicle in placed in gear. To prevent the added drag from the torque converter and transmission from reducing the idling speed, the PCM will command the idle control valve to allow more air to enter the engine, while at the same time, adjusting the injector pulse width to inject more fuel to suit the increased amount of air. Note that the idle air control valve is closed by the PCM when the throttle plate is opened to prevent excess air from entering the engine.

Difficulty Level (Expert)

Repair Time (35 Min.)

Cost Prediction : $ 30-110

P012B Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine P012B light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions. After this brief flash, the light should stay off while you drive as long as no problems are detected. If o2 sensor circuit high voltage (bank 2 sensor 1) so, you'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the o2 sensor circuit high voltage (bank 2 sensor 1).

P012B is a kind of Powertrain Trouble Code Powertrain of a modern automobile, comprising engine (with exhaust system), transmission, drive shaft, suspension and the wheels. In a motor vehicle, the term powertrain or powerplant describes the main components that generate power and deliver it to the road surface, water, or air.

Common Causes of P012B

A common cause of code P012B is the failure of O2 Sensor Circuit High Voltage (Bank 2 Sensor 1), but there are several other possible causes as well, such as ;

• Air fuel ratio (A/F) Sensor 1 Bank 1 harness is open or shorted
• Engine Control Module (ECM)
• Ignition misfiring
• Spark plugs may be faulty

P012B code for all cars

You can view according P012B DTC for your car model. We selected several models to see obd2 solutions click and view it.

+P012B Lincoln Capri

+P012B Austin A99

+P012B Mazda Rx-evolv

+P012B Fiat Doblo

+P012B Volkswagen 1600

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