P2623 Fault Code

Injector Control Pressure Regulator Circuit/Open

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2623 fault code indicates a problem with the injector control pressure regulator circuit or an open circuit that prevents the regulator from operating as expected. This code can lead to improper fuel delivery and engine performance issues.

What are the symptoms of the P2623 code?

Symptoms may include:

• Engine misfire or rough running
• Decreased fuel efficiency
• Engine stalling or difficulty starting
• Check Engine Light (CEL) illuminated on the dashboard.

What causes the P2623 code?

Possible causes of the P2623 code include:

• A faulty injector control pressure regulator
• Open or shorted wiring in the injector control circuit
• Poor connections or corroded terminals
• Issues within the engine control module (ECM) that may affect the regulator's operation.

How to fix P2623?

To resolve the P2623 code, follow these steps:

• Inspect the wiring and connectors for damage or corrosion.
• Test the injector control pressure regulator for proper operation and replace it if faulty.
• Ensure that the ground connections and power supply to the regulator are functioning well.
• If necessary, reprogram or replace the ECM after verifying all other components are working correctly.