U1449 Holden Commodore OBD Code

OBD/2 U1449 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.

U1449 Holden Commodore Error Code Repair Process :

The rule of U1449 code when it comes to emissions-related vehicle repair is that any modification that changes the vehicle from a certified configuration to a non-certified configuration is considered tampering: this applies to both vehicle owners and repair facilities and is, therefore, a Federal offense. Replacing a catalyst with a straight pipe is one traditional example of oil level lamp circuit short to ground. Likewise, overriding the OBD U1449 error in system through the use of high-tech defeat devices or non-certified computer chips, for example, would also be considered tampering. The OBD system may, however, be repaired back to its original certified configuration with certified performance chips or appropriate aftermarket parts.

Common Causes of Holden Commodore U1449 OBD2 Code

A common cause of code U1449 is the failure of Oil Level Lamp Circuit Short To Ground, but there are several other possible causes as well, such as ;

1Camshaft Position Sensor circuit poor electrical connection
Continuous oil flow to the VCT piston chamber
Clogged or faulty fuel injector (s)
Foreign matter caught in fuel filler cap

U1449 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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U1449 Holden Commodore OBD Code

U1449 Holden Commodore Error Code Repair Process :

Common Causes of Holden Commodore U1449 OBD2 Code

U1449 code for other Holden cars