1998 Land Rover Discovery Series I OBD2 Code P0602 Control Module Programming Error

What Does P0602 Code Mean?

OBD-II Code P0602 is defined as a Control Module Programming Error

The engine control module (PCM) performs many vital functions in a modern vehicle, including management of the Fuel and Ignition Systems. The PCM regularly runs a self-diagnosis function where it performs normal mathematical calculations, and if the results of these calculations are not as expected the PCM will set code P0602.

P0602 Symptoms

• Decreased engine performance
• Engine may not start
• Engine may stall

Common Problems That Trigger the P0602 Code

• Powertrain Control Module (PCM) failure
• Wiring issue