P2604 - OBD II Trouble Code

Our automotive experts have put together the following information about the P2604 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 P2604 code.

OBD II Fault Code

• OBD II P2604

OBD-II Code Powertrain Control Module (PCM) failure is defined as a Intake Air Heater "A" Circuit Range/Performance

The Intake Air Heater warms the air going into the engine on cold startups. If the engine control module (PCM) detects a failure in the Intake Air Heater or its wiring, it will set code P2604.

Common Problems That Trigger the P2604 Code

• Intake air heater
• Powertrain Control Module (PCM) failure
• Wiring issue