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's a problem with a part of the car that helps control how fuel is pumped. It's like a switch that isn't working right, so the car can't use fuel as it should.
The code indicates an issue with the electrical circuit controlling the hydraulic fuel pump select valve, which is used in alternative fuel systems.
P2A72 is triggered when the Engine Control Module (ECM) detects a low voltage or insufficient signal in the circuit that controls the hydraulic fuel pump select valve. This valve is responsible for switching between different fuel sources in vehicles that use alternative fuels.
• Check Engine Light illuminated
• Reduced fuel efficiency
• Engine performance issues
• Faulty hydraulic fuel pump select valve
• Damaged or corroded wiring or connectors
• Faulty ECM or control module
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 or corrosion.
• Test the hydraulic fuel pump select valve for proper operation.
• Replace the faulty hydraulic fuel pump select valve.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $500
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regular maintenance checks
• Ensure proper wiring connections
• Use quality fuel
Sensor Issue
• Avoid driving long distances until fixed.
• Consult a professional mechanic for diagnosis.
Check vehicle warranty for coverage on emissions-related components.
This code has been associated with hybrid and alternative fuel vehicles since their introduction.
Moderate – Should be addressed to prevent fuel efficiency and performance issues.
Operating a vehicle with this code may not comply with emissions regulations.
• Vehicle at operating temperature
• Engine running
The hydraulic fuel pump select valve is typically located near the fuel tank or along the fuel line.
Q: Can I drive with a P2A72 code?
A: It's possible, but not recommended due to potential fuel efficiency and performance issues.
Q: How do I clear a P2A72 code?
A: Fix the underlying issue, then use an OBD-II scanner to clear the code.
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