What does P0605 mean?

This code indicates a fault with the Read Only Memory (ROM) of the Powertrain Control Module (PCM). This memory contains the module's operating software.

• Internal PCM fault affecting ROM
• Corrupted software or firmware
• Damage to the PCM hardware

Click steps to track your progress.

1. 1

   Attempt to reflash the PCM with updated software.

2. 2

   Ensure the PCM is protected from extreme temperatures.

3. 3

   Check PCM connectors for secure fit and cleanliness.

4. 4

   A faulty PCM will likely need to be replaced.