P03A3 Simca 1000 OBD Code

OBD/2 P03A3 error code description and symptoms.

Mass Air Flow (MAF) Sensor Intermittent The MAF sensor circuit is monitored by the PCM for sudden voltage (or air flow) input change through the comprehensive component monitor (CCM). If during the last 40 warm-up cycles in key ON engine running the PCM detects a voltage (or air flow) change beyond the minimum or maximum calibrated limit, a continuous memory diagnostic trouble code (DTC) is stored.

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 1000 Error Code Repair Process :

If your lack of ho2s switch - sensor indicates lean check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system P03A3 and engine control unit are in charge of monitoring a bunch of different lack of ho2s switch - sensor indicates lean, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Simca 1000 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 ;

Damaged camshaft position (CMP) sensor
Clogged or faulty fuel injector (s)
Foreign matter caught in fuel filler cap
Fuel filler cap remains open or fails to close

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 1000 OBD Code

P03A3 Simca 1000 Error Code Repair Process :

Common Causes of Simca 1000 P03A3 OBD2 Code

P03A3 code for other Simca cars