Injector Control Pressure Regulator Circuit Low
The P2624 code indicates that the Engine Control Module (ECM) has detected a low voltage or resistance in the injector control pressure regulator circuit. This regulator controls fuel pressure to the injectors, and a low circuit condition can lead to improper fuel delivery, affecting engine performance and emissions.
01. Most Common Causes
- Faulty injector control pressure regulator
- Open or shorted wiring in the regulator circuit
- Poor electrical connection at the regulator or ECM
- Failed ECM
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Engine misfire or rough idle
- Reduced engine power or hesitation
- Poor fuel economy
03. Step-by-Step Diagnosis
Step 1: Use a scan tool to retrieve freeze frame data and verify the code.
Step 2: Visually inspect the injector control pressure regulator and its wiring for damage or corrosion.
Step 3: Test the regulator circuit voltage and resistance with a multimeter against manufacturer specifications.
Step 4: If circuit is intact, test the regulator itself; replace if faulty.
Step 5: Clear the code and test drive to see if it returns.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as it can cause engine performance issues and potential damage. Have it diagnosed promptly.
How much does it cost to fix?▼
Typical repair costs range from $50 to $150 for parts and labor, depending on the cause and vehicle model.