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 air conditioning. It's like a switch that isn't working right, so the car can't cool down properly.
The P1D95 code indicates an issue with the control circuit for the heat pump expansion valve 'B'. This valve is crucial for regulating the flow of refrigerant in the air conditioning system.
The heat pump expansion valve 'B' is part of the vehicle's HVAC system, responsible for controlling the refrigerant flow. An open circuit or failure in the control circuit can disrupt the operation of the valve, leading to inefficient cooling or heating.
• Poor air conditioning performance
• Unusual noises from the HVAC system
• HVAC system not responding to controls
• Faulty heat pump expansion valve
• Damaged wiring or connectors in the circuit
• Failed control module
HVAC: Heating, Ventilation, and Air Conditioning
Refrigerant: A substance used in the cooling mechanism of an air conditioner.
• Check for any blown fuses related to the HVAC system.
• Inspect the wiring and connectors for damage or corrosion.
• Test the heat pump expansion valve for proper operation.
• Replace the faulty heat pump expansion valve.
• Repair or replace damaged wiring or connectors.
• Reset or replace the control module if necessary.
• Multimeter
• OBD-II scanner
• Screwdriver set
$150 - $400
Moderate
• Honda Accord Hybrid
• Toyota Prius
• Chevrolet Volt
• Regularly inspect HVAC system components.
• Ensure wiring and connectors are secure and undamaged.
• Perform routine maintenance on the air conditioning system.
HVAC System Issue
• Avoid using the air conditioning until the issue is resolved.
• Consult a professional mechanic for accurate diagnosis.
• Monitor for any additional symptoms or codes.
Check with your vehicle manufacturer for warranty coverage on HVAC components.
This code has been associated with hybrid and electric vehicles due to their complex HVAC systems.
Moderate – While not immediately critical, it can affect comfort and HVAC efficiency.
Operating a vehicle with a malfunctioning HVAC system may lead to discomfort and reduced visibility in certain conditions.
• Vehicle engine running
• HVAC system set to cooling mode
The expansion valve is typically located within the HVAC unit, near the evaporator core.
Q: Can I drive my car with this code?
A: Yes, but the air conditioning may not work properly, which could be uncomfortable in hot weather.
Q: Will this code affect my car's performance?
A: It won't affect the engine performance, but it will impact the HVAC system's ability to cool or heat the cabin.
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.
Fitment Required · Vehicle-fitment part
Relevant when EVAP diagnosis points toward purge-flow or purge-control faults.
EVAP diagnosis often includes purge-flow and valve-control faults.
Confirm the failed valve and exact fitment before buying parts.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.