P03AF Vector M 12 OBD Code

OBD/2 P03AF 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.

P03AF Vector M 12 Error Code Repair Process :

If your air assist control valve range/performance 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 P03AF and engine control unit are in charge of monitoring a bunch of different air assist control valve range/performance, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Vector M 12 P03AF OBD2 Code

A common cause of code P03AF is the failure of Air Assist Control Valve Range/Performance, but there are several other possible causes as well, such as ;

Damaged camshaft position (CMP) sensor
Engine Control Module (ECM)
Ignition misfiring
Incorrect fuel filler cap used

P03AF 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.

P03AF code for other Vector cars

You can view according P03AF DTC for your car model. We selected several models to see obd2 solutions click and view it.

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

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