U1939 Trouble Code

View U1939 obd/2 error code description and symptoms. U1939 engine photo

The input turbine speed sensor detects rotation of the input shaft of the input shaft speed sensor transmission. The computer uses that information, along with the output shaft speed sensor to determine if the transmission is operating according to plan. If the computer detects a difference between the input shaft speed , and the expected output shaft speed, it will adjust transmission pump pressure to prevent clutch disc slip. If adding pressure doesn't solve the problem, it will set a trouble code.

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.

Difficulty Level (Expert)
Level
Repair Time (60 Min.)
Time
Cost Prediction : $ 35-120

U1939 Error Code Repair Process :

The scent may U1939 signal oil or coolant leaking from their normally closed-loop systems, or it may indicate dangerous exhaust gases invading your car's interior. Car and truck exhaust contains toxic gases such U1939, so if the inside of your car seatbelt passenger pretensioner circuit short to battery as if you were standing behind your car, get out and get it fixed. Fight the urge to take a little nap first. So sleepy. That's the carbon monoxide talking, friends. At least open a window on your way to the shop.

Wrench Tool U1939 is a kind of Network Trouble Code

U-code indicates that engine communication errors and shows lost communication with engine parts.U-Codes are fairly straight forward, given all of the articles and technical publications that have been written regarding these problematic codes. In most cases, it just comes down to identifying the module that isn't communicating with the other modules on the CAN bus line for whatever reason.

Common Causes of U1939

A common cause of code U1939 is the failure of Seatbelt Passenger Pretensioner Circuit Short to Battery, but there are several other possible causes as well, such as ;

U1939 code for all cars

You can view according U1939 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+U1939 Alfa Romeo Rl +U1939 Ford Explorer Iv +U1939 Vauxhall Vectra +U1939 Audi A4 +U1939 Peugeot 4008

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

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