Fuel Pump Module Control Circuit High
The P025D code indicates that the Powertrain Control Module (PCM) has detected a voltage higher than expected in the fuel pump module control circuit. This circuit controls the fuel pump relay or fuel pump driver module. A high voltage condition can be caused by a short to power, a faulty fuel pump module, or a malfunctioning PCM. This can lead to improper fuel delivery, causing drivability issues.
01. Most Common Causes
- Short to power in the fuel pump control circuit
- Faulty fuel pump module or relay
- Corroded or damaged wiring/connectors
- Failed PCM (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Engine may not start or stalls
- Poor acceleration or hesitation
- Decreased fuel economy
03. Step-by-Step Diagnosis
Step 1: Use a scan tool to confirm P025D and check for other codes.
Step 2: Visually inspect the fuel pump control circuit wiring and connectors for damage or corrosion.
Step 3: Test the fuel pump module and relay with a multimeter for proper voltage and resistance.
Step 4: Check for shorts to power in the circuit using a wiring diagram.
Step 5: If all else is fine, test the PCM output or replace the PCM as a last resort.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended. The vehicle may stall or fail to start, leading to unsafe driving conditions.
How much does it cost to fix?▼
Diagnosis typically costs $50-$150. Repair costs vary: wiring repair $100-$200, fuel pump module $200-$500, PCM replacement $500-$1000.