U3746 Cadillac Calais OBD Code

OBD/2 U3746 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.

At this point we are assuming that the fuses and relays are good. You will need to locate the PCM/TCM and the power input signal circuit using your vehicle information source. Unplug the connector from the PCM/TCM, place the ignition switch in the ON position, and probe the appropriate circuit with the positive test lead of the DVOM.

U3746 Cadillac Calais Error Code Repair Process :

If your output circuit check signal low 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 U3746 and engine control unit are in charge of monitoring a bunch of different output circuit check signal low, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Cadillac Calais U3746 OBD2 Code

A common cause of code U3746 is the failure of Output Circuit Check Signal Low, but there are several other possible causes as well, such as ;

1Camshaft Position Sensor circuit poor electrical connection
Exhaust gas leaks
Intake Valve Timing Control Solenoid Valve harness is open or shorted
Faulty spark plug (s)

U3746 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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U3746 Cadillac Calais OBD Code

U3746 Cadillac Calais Error Code Repair Process :

Common Causes of Cadillac Calais U3746 OBD2 Code

U3746 code for other Cadillac cars