C2639 Trouble Code

View C2639 obd/2 error code description and symptoms. C2639 engine photo

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.

C2639 Error Code Repair Process :

For power door lock circuit open check engine light is perhaps the most troubling of lights because it could mean so many different things, from you didn't screw the gas cap on tightly enough to look out for pistons flying through the hood and into the stratosphere. The easiest way to find out what this light is telling you is to hook your vehicle up to a scan tool. C2639 error code diagnostic tool looks a little like an oversized calculator and plugs into a communication port inside the car. After you instruct it to perform the scan, it speaks power door lock circuit open with your car's computers to find out exactly what's prompting the light to turn on.

C2639 is a kind of Chassis Trouble Code

Diagnosing chassis noises can be one of the most frustrating problems technicians face. Fortunately, manufacturers have engineered noise, vibration and harshness (NVH) diagnostic techniques and equipment to find the source of the noise.

Common Causes of C2639

A common cause of code C2639 is the failure of Power Door Lock Circuit Open, but there are several other possible causes as well, such as ;

Damaged camshaft position (CMP) sensor
Faulty Mass Air Flow (MAF) sensor
Faulty select solenoid
Erratic camshaft position due to low oil pressure

C2639 code for all cars

You can view according C2639 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+C2639 Panhard Pl

+C2639 Mazda Marathon

+C2639 Mohs Ostentatienne

+C2639 Glas Isar

+C2639 Singer Gazelle

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

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