Fuel Pump Module Control Circuit Low
The P025C code indicates that the Powertrain Control Module (PCM) has detected a low voltage condition in the fuel pump module control circuit. This circuit is responsible for controlling the fuel pump relay or the fuel pump itself. A low voltage reading suggests a short to ground, open circuit, or a failing fuel pump module. This can lead to insufficient fuel pressure, causing drivability issues.
01. Most Common Causes
- Faulty fuel pump module
- Open or shorted wiring in the control circuit
- Corroded or loose connector at the fuel pump module
- Failed PCM (rare)
02. Symptoms You Will Notice
- Engine cranks but does not start
- Loss of power or hesitation during acceleration
- Fuel pump does not prime when key is turned on
- Check Engine Light illuminated
03. Step-by-Step Diagnosis
Step 1: Use a scan tool to confirm the code and check for related codes.
Step 2: Inspect the fuel pump module connector for corrosion, damage, or loose pins.
Step 3: Test the control circuit voltage at the fuel pump module connector with a multimeter (should be near battery voltage with key on).
Step 4: Check for continuity and shorts in the wiring between the PCM and fuel pump module.
Step 5: If wiring is okay, replace the fuel pump module.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
No, it is not safe. The vehicle may stall or fail to start, leading to a potential accident or being stranded.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for diagnosis and repair, but can be higher if the fuel pump module needs replacement.