U3694 Holden Gts OBD Code

OBD/2 U3694 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.

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.

U3694 Holden Gts Error Code Repair Process :

If your ecm/tcm serial communication error 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 U3694 and engine control unit are in charge of monitoring a bunch of different ecm/tcm serial communication error, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Holden Gts U3694 OBD2 Code

A common cause of code U3694 is the failure of ECM/TCM Serial Communication Error, but there are several other possible causes as well, such as ;

Damaged camshaft position (CMP) sensor
Camshaft advance mechanism binding (VCT unit)
1Camshaft Position Sensor circuit poor electrical connection
Intake Valve Timing Control Solenoid Valve harness is open or shorted

U3694 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.

About Us | Contact | Privacy

U3694 Holden Gts OBD Code

U3694 Holden Gts Error Code Repair Process :

Common Causes of Holden Gts U3694 OBD2 Code

U3694 code for other Holden cars