What Does P2624 Mean?
The PCM has detected abnormally low voltage or current in the injector control pressure regulator circuit. This indicates a short to ground or excessive resistance in the fuel pressure control system.
Safety Warning
Loss of fuel pressure control will cause engine performance issues, potential no-start, or engine stalling. Do not operate under heavy load.
Common Causes
30%
Wiring shorted to ground in injector pressure regulator circuit
35%
Failed injector control pressure regulator with internal short
20%
Oil or fuel contamination in connector causing short circuit
15%
PCM internal fault with shorted output driver
Diagnostic Steps
1
Step 1: Disconnect injector pressure regulator connector and measure resistance to ground (should be >10k ohms)
2
Step 2: Inspect connector and pins for oil/fuel contamination, moisture, or corrosion
3
Step 3: Measure injector pressure regulator solenoid resistance and compare to specifications
4
Step 4: Check for damaged wiring where harness routes near hot or moving components
5
Step 5: Monitor PCM output voltage/current at connector with regulator disconnected to verify PCM function
Estimated Repair Cost
$250 - $1,500
Parts + labor, varies by vehicle and location
The PCM has detected abnormally low voltage or current in the injector control pressure regulator circuit. This indicates a short to ground or excessive resistance in the fuel pressure control system.
The most common cause of P2624 (Injector Control Pressure Regulator Circuit Low) is: Wiring shorted to ground in injector pressure regulator circuit
Typical repair costs for P2624 range from $250 to $1,500, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Loss of fuel pressure control will cause engine performance issues, potential no-start, or engine stalling. Do not operate under heavy load.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2624 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Powertrain
System
Diesel Fuel Injection System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
