U1449 Holden Ej OBD Code

OBD/2 U1449 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.

As the engine heats up and combustion becomes easier and more complete, the PCM will command the idling control valve to increase the amount of air entering the engine to suit the changing conditions. However, when the load on the engine changes, say, when some electrical consumers or other systems are either turned on or off, the PCM adapts the signal voltage to the idle control valve to ensure that the idling speed remains stable, and at the RPM specified by the manufacturer.

U1449 Holden Ej Error Code Repair Process :

If your oil level lamp circuit short to ground 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 U1449 and engine control unit are in charge of monitoring a bunch of different oil level lamp circuit short to ground, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Holden Ej 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 ;

Damaged camshaft position (CMP) sensor
Dirty Oil
Faulty TCM or TCM programming
Open or short in the VCT circuit

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 Ej OBD Code

U1449 Holden Ej Error Code Repair Process :

Common Causes of Holden Ej U1449 OBD2 Code

U1449 code for other Holden cars