Injector Control Pressure Regulator Circuit High
The P2625 code indicates that the Engine Control Module (ECM) has detected a voltage signal from the injector control pressure regulator circuit that is higher than the expected range. This regulator controls fuel pressure in the high-pressure fuel system, typically in diesel engines. A high voltage reading suggests a short to power, faulty regulator, or wiring issue.
01. Most Common Causes
- Faulty injector control pressure regulator
- Short to power in the regulator circuit
- Damaged wiring or connector
- Failed ECM
02. Symptoms You Will Notice
- Check Engine Light on
- Engine misfire or rough idle
- Reduced engine power
- Poor fuel economy
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Visually inspect the regulator and wiring for damage or corrosion.
Step 3: Test the regulator circuit voltage with a multimeter; compare to manufacturer specs.
Step 4: Check for shorts to power or ground in the wiring harness.
Step 5: If wiring is OK, test the regulator resistance and replace if out of spec.
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 to the fuel system.
How much does it cost to fix?▼
Repair costs typically range from $150 to $400, depending on the cause and labor rates.