P284B - OBD II Trouble Code

Our automotive experts have put together the following information about the P284B diagnostic trouble code. We've provided the common symptoms that occur when this code is set along with the frequent repairs that address the issues related to the P284B code.

OBD II Fault Code

• OBD II P284B

OBD-II Code Transmission may not shift properly is defined as a Shift Fork "C" Stuck

The Transmission is responsible for converting the power produced by the engine to movement of the vehicle. Some transmissions utilized electric motors to change gears. If the Transmission Control Module determines that the transmission is not shifting properly, code P284B will be set.

Transmission may not shift properly Symptoms

• Increased fuel consumption
• Transmission may not shift properly

Common Problems That Trigger the P284B Code

• Internal transmission failure
• Transmission Control Module (TCM) failure
• Transmission Control Module (TCM) needs to be calibrated
• Transmission Control Module (TCM) software needs to be updated
• Wiring issue