P0821 - OBD II Trouble Code

Our automotive experts have put together the following information about the P0821 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 P0821 code.

OBD II Fault Code

• OBD II P0821

OBD-II Code Powertrain Control Module (PCM) failure is defined as a Gear Lever X Position Circuit

The Gear Lever Position Sensor tells the engine computer (PCM) what gear the transmission is in. If the Gear Lever Position Sensor gives the PCM an implausible signal, code P0821 is set.

Common Problems That Trigger the P0821 Code

• Powertrain Control Module (PCM) failure
• Shift lever assembly failure
• Wiring issue