C0637 Trouble Code

OBD/2 C0637 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 long as the throttle plate remains closed, the idling speed and quality is controlled by the PCM via the idle control valve, and as can be seen from the above it should be clear that idle control on a gasoline engine is a complex affair. For instance, if the engine is started in sub-zero temperatures, the PCM will command the idling control valve to allow less air to enter the engine to enrich the air/fuel mixture to create a condition which is roughly analogous to how chokes worked on carburetted engines to control idling in cold weather.

Difficulty Level (Easy)
Level
Repair Time (20 Min.)
Time
Cost Prediction : $ 40-75

C0637 Error Code Repair Process :

If your mirror passenger vertical feedback potentiometer circuit failure 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 C0637 and engine control unit are in charge of monitoring a bunch of different mirror passenger vertical feedback potentiometer circuit failure, and if they get a reading that's a little out of whack, up pops the check engine light.

Wrench Tool C0637 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 C0637

A common cause of code C0637 is the failure of Mirror Passenger Vertical Feedback Potentiometer Circuit Failure, but there are several other possible causes as well, such as ;

C0637 code for all cars

You can view according C0637 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+C0637 Marcos Mantis +C0637 BMW 335 +C0637 Humber Pullman +C0637 Mercedes-Benz Sprinter +C0637 Volvo V4
Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.
Copyright 2017 © All rights reserved