Fuel Pump Module Control Circuit Range/Performance
The P025B code indicates that the Engine Control Module (ECM) has detected a malfunction in the fuel pump module control circuit, specifically a range or performance issue. This circuit controls the voltage or signal to the fuel pump, and the ECM monitors feedback to ensure proper operation. A fault can cause the fuel pump to run at incorrect speed or fail to respond correctly, leading to fuel delivery problems.
01. Most Common Causes
- Faulty fuel pump module
- Wiring or connector issues in the control circuit
- Failed fuel pump relay
- ECM software or hardware problem
02. Symptoms You Will Notice
- Engine cranks but does not start
- Loss of power or hesitation during acceleration
- Check Engine Light illuminated
- Poor fuel economy
03. Step-by-Step Diagnosis
Step 1: Use a scan tool to confirm P025B and check for other codes.
Step 2: Inspect wiring and connectors for damage, corrosion, or loose connections.
Step 3: Test fuel pump relay and fuse per manufacturer specifications.
Step 4: Check fuel pump module voltage and ground signals with a multimeter.
Step 5: If all else is okay, replace the fuel pump module.
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, posing a safety risk.
How much does it cost to fix?▼
Diagnosis typically costs $50-$150. Parts and labor for fuel pump module replacement can range from $200-$600.