P21A2 Volkswagen Sp2 OBD Code

OBD/2 P21A2 error code description and symptoms.

Intake Manifold Runner Control Malfunction (Stuck Open) The IMRC system is monitored for failure during continuous, key ON engine OFF or key ON engine running self-test. The test fails when the signal on the monitor pin is less than an expected calibrated range at closed throttle. IMRC monitor signal circuit shorted to PWR GND or SIG RTN Damaged IMRC actuator Damaged PCM An IMRCM PID reading approximately near 1 volt at closed throttle may indicate a fault.

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.

P21A2 Volkswagen Sp2 Error Code Repair Process :

For injector circuit / idm codes detected check engine light is perhaps the most troubling of lights because it could mean so many different things, from you didn't screw the gas cap on tightly enough to look out for pistons flying through the hood and into the stratosphere. The easiest way to find out what this light is telling you is to hook your vehicle up to a scan tool. P21A2 error code diagnostic tool looks a little like an oversized calculator and plugs into a communication port inside the car. After you instruct it to perform the scan, it speaks injector circuit / idm codes detected with your car's computers to find out exactly what's prompting the light to turn on.

Common Causes of Volkswagen Sp2 P21A2 OBD2 Code

A common cause of code P21A2 is the failure of Injector Circuit / IDM Codes Detected, but there are several other possible causes as well, such as ;

1Camshaft Position Sensor circuit poor electrical connection
EVAP system hose leaking
Exhaust gas leaks
1Camshaft Position Sensor circuit poor electrical connection

P21A2 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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P21A2 Volkswagen Sp2 OBD Code

P21A2 Volkswagen Sp2 Error Code Repair Process :

Common Causes of Volkswagen Sp2 P21A2 OBD2 Code

P21A2 code for other Volkswagen cars