Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there is a problem with the car's fuel pump system. It's like when a toy car doesn't get enough power from its battery to move properly.
The P027B code indicates an issue with the fuel pump module's control circuit, which is not operating within the expected range or performance.
The Engine Control Module (ECM) has detected that the fuel pump module B control circuit is operating outside of its normal range. This could be due to electrical issues, such as a short or open circuit, or a malfunctioning fuel pump module.
• Engine may not start
• Poor engine performance
• Check Engine Light is on
• Faulty fuel pump module
• Wiring issues in the fuel pump circuit
• Faulty ECM
ECM: Engine Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage.
• Test the fuel pump module for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the faulty fuel pump module.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $800
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and maintain fuel system components.
• Ensure fuel system wiring is secure and undamaged.
• Use quality fuel to prevent contamination.
Engine Performance
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Regular maintenance can prevent this issue.
Check with the vehicle manufacturer for specific warranty coverage on fuel system components.
This code has been associated with issues in vehicles with high mileage or poor maintenance history.
Moderate – It is important to address this issue to prevent further engine performance problems.
Driving with a malfunctioning fuel pump can lead to engine stalling, which is a safety hazard.
• Engine running
• Vehicle in a safe location for testing
The fuel pump module is typically located in or near the fuel tank.
Q: Can I drive with a P027B code?
A: It's not recommended, as it can cause engine performance issues and potential safety hazards.
Q: How can I reset the Check Engine Light after fixing the issue?
A: Use an OBD-II scanner to clear the code after repairs are completed.
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