Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer is having trouble controlling a valve that switches between different fuel tanks. It's like a switch that isn't working right.
The P2A95 code indicates that there is an issue with the electrical circuit that controls the valve responsible for selecting the alternative fuel tank. This could mean the circuit is open or not functioning correctly.
The P2A95 code is triggered when the Engine Control Module (ECM) detects an open circuit or a fault in the control circuit of the Alternative Fuel Tank Select Valve B. This valve is responsible for switching between different fuel tanks in vehicles that use alternative fuels.
• Check Engine Light is on
• Inability to switch fuel tanks
• Possible fuel system performance issues
• Faulty Alternative Fuel Tank Select Valve B
• Open or shorted wiring in the valve circuit
• Faulty ECM
ECM: Engine Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the valve for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the faulty Alternative Fuel Tank Select Valve B.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regularly inspect and maintain fuel system components.
• Ensure wiring and connectors are free from corrosion.
• Use quality fuel to prevent contamination.
Control Circuit Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Avoid using alternative fuel until the issue is resolved.
Check with your vehicle manufacturer as some components may be covered under warranty.
This code has been more prevalent in hybrid and alternative fuel vehicles due to their complex fuel systems.
Moderate – While the vehicle may still operate, it is important to address the issue to prevent further complications.
Ignoring this code could lead to fuel system inefficiencies and potential safety hazards.
• Ensure the vehicle is on a flat surface.
• The ignition should be in the 'on' position without starting the engine.
The Alternative Fuel Tank Select Valve B is typically located near the fuel tanks or along the fuel line.
Q: Can I drive with the P2A95 code?
A: It is possible to drive, but it is recommended to fix the issue soon to avoid potential fuel system problems.
Q: Will this code affect fuel efficiency?
A: Yes, it can affect fuel efficiency if the vehicle cannot switch between fuel tanks properly.
High-End · Full-system diagnostics
A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.
Network faults often require full-system access instead of a generic code reader alone.
View on Amazon
Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
View on Amazon
Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.