U3870 Trouble Code

View U3870 obd/2 error code description and symptoms. U3870 engine photo

The issue covered by the bulletin involves a power steering noise/whine or fluid leak from the power steering pump, gear or high pressure side power steering hose during extreme low outdoor temperature operation.

To check for an open circuit, trace along the length of the transmission control circuit, checking for breaks in the wiring. Repair any broken wiring and make sure all connectors are fully seated and locked.Pay close attention to connectors, looking for corrosion, bent or broken pins, or moisture in the connector. Repair any connector issues even if they are not specifically part of the transmission control circuit as they may serve a function in providing power to the transmission control circuit.

U3870 Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine U3870 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 neutral safety switch short circuit to battery 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 neutral safety switch short circuit to battery.

U3870 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 U3870

A common cause of code U3870 is the failure of Transmission Neutral Safety Switch Short Circuit To Battery, but there are several other possible causes as well, such as ;

Exhaust gas leaks
EVAP canister or fuel tank leaks
Faulty Fuel injector
Erratic camshaft position due to low oil pressure

U3870 code for all cars

You can view according U3870 DTC for your car model. We selected several models to see obd2 solutions click and view it.

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

About Us | Contact | Privacy