P064D OBD-II: Internal Control Module O2 Sensor Processor Performance

OBD II Fault Code

• OBD II P064D

OBD-II Code Decreased engine performance is defined as a Internal Control Module O2 Sensor Processor Performance

The engine control module (PCM) performs many vital functions in a modern vehicle, such as management of the Fuel System, Ignition System, Transmission, Anti-Lock Brake and Traction Control 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 P064D.

Decreased engine performance Symptoms

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

Common Problems That Trigger the P064D Code

• Powertrain Control Module (PCM) failure
• Wiring issue