OBD II Fault Code

  • OBD II P0898

OBD-II Code Transmission may not shift properly is defined as a Transmission Control System MIL Request Circuit Low

The automatic transmission matches the engine optimum power and torque characteristics to the driver's desired rate of acceleration and speed by auto-selecting different gear ratios or 'speeds' to power the wheels. When the Transmission control module (TCM) cannot communicate with the engine computer (PCM) it will send a message to the engine computer (PCM) to set code P0898.

Transmission may not shift properly Symptoms

  • Increased fuel consumption
  • Transmission may not shift properly

Common Problems That Trigger the P0898 Code

  • Powertrain Control Module (PCM) failure
  • Transmission Control Module (TCM) failure
  • Wiring issue
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