B3688 Trouble Code

View B3688 obd/2 error code description and symptoms. B3688 engine photo

The Transmission Fluid Pressure Switch allows the engine's control module (PCM) or Transmission Control Module (TCM) to use hydraulic fluid to engage the clutches in the transmission to allow for smoother shifting while driving. If the PCM or TCM detects an issue with the hydraulic clutch or the pressure switch, the PCM or TCM will set code B3688

At this point we are assuming that the fuses and relays are good. You will need to locate the PCM/TCM and the power input signal circuit using your vehicle information source. Unplug the connector from the PCM/TCM, place the ignition switch in the ON position, and probe the appropriate circuit with the positive test lead of the DVOM.

B3688 Error Code Repair Process :

For transmission transfer case front shaft speed sensor circuit failure 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. B3688 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 transmission transfer case front shaft speed sensor circuit failure with your car's computers to find out exactly what's prompting the light to turn on.

B3688 is a kind of Body Trouble Code

Auto body problems aren't always easy to spot. Diagnosing auto body problems sometimes requires a little know-how. In this section you'll find articles dedicated to teaching you how to diagnose auto body problems.

Common Causes of B3688

A common cause of code B3688 is the failure of Transmission Transfer Case Front Shaft Speed Sensor Circuit Failure, but there are several other possible causes as well, such as ;

Continuous oil flow to the VCT piston chamber
Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection
Fuel injector leaks
Faulty front heated oxygen sensor

B3688 code for all cars

You can view according B3688 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+B3688 Dkw Munga

+B3688 Maybach Ds8

+B3688 Izh Oda

+B3688 Td Cars Td2000

+B3688 Paige Paige

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