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 the part of the car that helps control the flow of special fuel to the engine. It's like a switch that isn't working right.
The P2A70 code indicates an issue with the control circuit for the hydraulic fuel pump select valve, which is used in vehicles with alternative fuel systems.
The P2A70 code is triggered when the Engine Control Module (ECM) detects a malfunction in the control circuit of the hydraulic fuel pump select valve. This valve is responsible for selecting the appropriate fuel source in vehicles that use alternative fuels, such as hydrogen or natural gas.
• Check Engine Light is on
• Reduced engine performance
• Engine may run rough or stall
• Faulty hydraulic fuel pump select valve
• Damaged or corroded wiring or connectors
• Faulty Engine Control Module (ECM)
ECM: Engine Control Module, the computer that manages engine functions
Hydraulic Fuel Pump: A pump that uses hydraulic pressure to move fuel
• Scan the vehicle for codes and freeze frame data
• 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
• Basic hand tools
$200 - $600
Moderate
• Toyota Prius
• Honda Civic Hybrid
• Chevrolet Volt
• Regular maintenance of fuel system components
• Keep electrical connections clean and secure
• Use high-quality alternative fuels
Control Circuit Issue
• Avoid driving the vehicle until the issue is resolved to prevent further damage.
• Consult with a professional mechanic for an accurate diagnosis.
Check with your vehicle manufacturer to see if the repair is covered under warranty, especially if the vehicle is still under the powertrain warranty.
This code is relatively rare and typically associated with vehicles that use alternative fuel systems.
Moderate – It should be addressed soon to avoid potential engine performance issues.
Continuing to drive with this code can lead to increased emissions and potential safety hazards. Ensure repairs are conducted in compliance with local regulations.
• Engine running
• Alternative fuel system activated
The hydraulic fuel pump select valve is typically located near the fuel tank or along the fuel line in the engine compartment.
Q: Can I drive my car with a P2A70 code?
A: It's best to avoid driving until the issue is fixed to prevent further damage.
Q: What happens if I ignore the P2A70 code?
A: Ignoring the code can lead to poor engine performance and potential damage to the fuel system.
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