C3638 Trouble Code

View C3638 obd/2 error code description and symptoms. C3638 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.

A good starting point in your diagnosis is checking all system fuses and fusible links. This can be done using the DVOM on the voltage setting. You will want to test the fuses with circuits loaded. Some fuses will appear normal until a load is placed on their respective circuit; at which point they will fail. This has been the cause of many 'phantom malfunctions'. Consult your vehicle information source for fuse and fusible link locations. If all fuses are in working order, you may want to check TCM relay operation by swapping identical relays. Usually the horn relay, starter relay, fuel pump relay, air conditioning clutch relay, and controller relays are similar enough in design to swap for diagnostic purposes.

Difficulty Level (Expert)
Level
Repair Time (60 Min.)
Time
Cost Prediction : $ 80-120

C3638 Error Code Repair Process :

If your wheel speed sensor center tone ring missing tooth fault 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 C3638 and engine control unit are in charge of monitoring a bunch of different wheel speed sensor center tone ring missing tooth fault, and if they get a reading that's a little out of whack, up pops the check engine light.

Wrench Tool C3638 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 C3638

A common cause of code C3638 is the failure of Wheel Speed Sensor Center Tone Ring Missing Tooth Fault, but there are several other possible causes as well, such as ;

C3638 code for all cars

You can view according C3638 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+C3638 Lada 1600 +C3638 Mitsubishi Magna +C3638 Toyota Aa +C3638 Pontiac Catalina +C3638 De Tomaso Pampero

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