P03A3 Simca Montlhery OBD Code

OBD/2 P03A3 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.

P03A3 Simca Montlhery Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine P03A3 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 lack of ho2s switch - sensor indicates lean 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 lack of ho2s switch - sensor indicates lean.

Common Causes of Simca Montlhery P03A3 OBD2 Code

A common cause of code P03A3 is the failure of Lack Of HO2S Switch - Sensor Indicates Lean, 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
Faulty Camshaft Position Sensor
Faulty select solenoid
Incorrect fuel pressure

P03A3 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.

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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P03A3 Simca Montlhery OBD Code

P03A3 Simca Montlhery Error Code Repair Process :

Common Causes of Simca Montlhery P03A3 OBD2 Code

P03A3 code for other Simca cars