U012B Holden Vh OBD Code

OBD/2 U012B 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.

As long as the throttle plate remains closed, the idling speed and quality is controlled by the PCM via the idle control valve, and as can be seen from the above it should be clear that idle control on a gasoline engine is a complex affair. For instance, if the engine is started in sub-zero temperatures, the PCM will command the idling control valve to allow less air to enter the engine to enrich the air/fuel mixture to create a condition which is roughly analogous to how chokes worked on carburetted engines to control idling in cold weather.

U012B Holden Vh Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine U012B 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 scp (j1850) invalid or missing data for windows 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 scp (j1850) invalid or missing data for windows.

Common Causes of Holden Vh U012B OBD2 Code

A common cause of code U012B is the failure of SCP (J1850) Invalid or Missing Data for Windows, but there are several other possible causes as well, such as ;

1Camshaft Position Sensor circuit poor electrical connection
Exhaust gas leaks
Fuel tank leaking
Faulty select solenoid

U012B is a kind of Network Trouble Code

U-code indicates that engine communication errors and shows lost communication with engine parts.U-Codes are fairly straight forward, given all of the articles and technical publications that have been written regarding these problematic codes. In most cases, it just comes down to identifying the module that isn't communicating with the other modules on the CAN bus line for whatever reason.

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

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U012B Holden Vh OBD Code

U012B Holden Vh Error Code Repair Process :

Common Causes of Holden Vh U012B OBD2 Code

U012B code for other Holden cars