Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This means that the car's computer has detected a problem with the sensor that checks the voltage for the air conditioner's compressor motor. It's like when a battery tester shows a low reading, but for the car's A/C system.
The code indicates that the voltage sensor for the A/C compressor motor driver is reading lower than expected, which could affect the operation of the air conditioning system.
The P1D22 code is triggered when the powertrain control module (PCM) detects a low voltage condition in the A/C compressor motor driver voltage sensor circuit. This sensor helps the PCM monitor the voltage supplied to the A/C compressor motor, ensuring it operates efficiently. A low voltage reading could indicate an issue with the sensor itself, the wiring, or the A/C compressor motor.
• Air conditioning not working
• A/C compressor not engaging
• Check engine light illuminated
• Faulty A/C compressor motor driver voltage sensor
• Damaged or corroded wiring or connectors
• Faulty A/C compressor motor
PCM: Powertrain Control Module
A/C: Air Conditioning
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the A/C compressor motor driver voltage sensor for proper operation.
• Replace the faulty A/C compressor motor driver voltage sensor.
• Repair or replace damaged wiring or connectors.
• Replace the A/C compressor motor if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $500
Moderate
• Honda Accord
• Honda Civic
• Acura MDX
• Regularly inspect and maintain the A/C system.
• Check wiring and connectors for corrosion or damage.
• Ensure the A/C compressor is serviced periodically.
Sensor Issue
• Have the A/C system checked by a professional if you notice issues.
• Do not attempt to repair the A/C system without proper tools and knowledge.
Check with the vehicle manufacturer for warranty coverage on the A/C system components.
This code is relatively common in vehicles with electronic A/C systems, especially in models with high mileage or those exposed to harsh environmental conditions.
Moderate – While the vehicle can still be driven, the A/C system may not function properly, which can be uncomfortable in hot weather.
Always ensure repairs are performed by a qualified technician to avoid further damage or voiding warranties.
• Vehicle should be at normal operating temperature.
• A/C system should be turned on during testing.
The A/C compressor motor driver voltage sensor is typically located near the A/C compressor, often mounted on or near the engine block.
Q: What happens if I ignore this code?
A: Ignoring this code may lead to the A/C system not working properly, causing discomfort during hot weather.
Q: Can I fix this issue myself?
A: If you have automotive repair experience and the necessary tools, you may attempt to diagnose and fix the issue. Otherwise, it's best to consult a professional.
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.