B3689 Trouble Code

View B3689 obd/2 error code description and symptoms. B3689 engine photo

Output Shaft Speed sensor circuit intermittent failure The output shaft speed sensor signal to the PCM is irregular or interrupted.
Harness connector not properly seated Harness intermittently shorted, or open Harness connector damaged OSS sensor damaged, or not installed properly Verify harness and connector integrity Verify OSS sensor proper installation.

On some transmissions, such as automated manual transmissions or automatic transmissions with manual mode, the GSP switch lets the TCM know whether or not the driver has selected automatic or manual function. On manual transmissions, the GSP switch informs the TCM which gear the driver is selecting, and may function as a neutral safety switch, depending on system design. The TCM also uses the gate select position switch to monitor transmission operation. For example, if the driver selects manual mode and selects 3rd gear on an automatic transmission, the TCM may monitor speed sensors to detect clutch and brake slippage.

B3689 Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine B3689 light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions. After this brief flash, the light should stay off while you drive as long as no problems are detected. If transmission transfer case rear shaft speed sensor circuit failure so, you'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the transmission transfer case rear shaft speed sensor circuit failure.

B3689 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 B3689

A common cause of code B3689 is the failure of Transmission Transfer Case Rear Shaft Speed Sensor Circuit Failure, but there are several other possible causes as well, such as ;

Camshaft Position Sensor harness is open or shorted
Failures of clutch motion/travel sensors.
Air fuel ratio (A/F) Sensor 1 Bank 1 harness is open or shorted
Fuel injectors may be faulty

B3689 code for all cars

You can view according B3689 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+B3689 Toyota Prius 4

+B3689 Chrysler Grand Voyager

+B3689 Austin 2200

+B3689 Delage D

+B3689 Bmw 1800

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