Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's air conditioning system has a sensor that checks the power going to the A/C motor. This code means the sensor is saying there's not enough power getting to the motor.
The voltage sensor for the A/C compressor motor is detecting a lower than expected voltage in circuit 'B'.
The P1D26 code indicates that the Powertrain Control Module (PCM) has detected a low voltage condition in the A/C compressor motor voltage sensor 'B' circuit. This could be due to a fault in the sensor, wiring, or the compressor motor itself.
• Air conditioning not working properly
• Check engine light illuminated
• Unusual noises from the A/C system
• Faulty A/C compressor motor voltage sensor
• Wiring issues such as a short or open circuit
• 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 the A/C compressor motor.
• Test the A/C compressor motor voltage sensor for proper operation.
• Replace the faulty A/C compressor motor voltage sensor.
• Repair or replace damaged wiring or connectors.
• Replace the A/C compressor motor if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Honda Accord
• Honda Civic
• Acura MDX
• Regular maintenance of the A/C system
• Periodic inspection of wiring and connectors
• Timely replacement of faulty sensors
Sensor Issue
• Have the vehicle inspected by a professional mechanic.
• Avoid using the A/C system until the issue is resolved.
Repairs may be covered if the vehicle is still under the manufacturer's warranty.
This code has been reported in vehicles with aging A/C systems or those that have experienced electrical issues.
Moderate – While the vehicle is still drivable, the A/C system may not function properly, and prolonged use could lead to further damage.
Ignoring this code may lead to discomfort while driving due to a non-functional A/C system.
• Engine running
• A/C system activated
The A/C compressor motor voltage sensor is typically located near the A/C compressor, which is mounted on the engine.
Q: Can I drive with a P1D26 code?
A: Yes, but the A/C system may not work properly, and it is recommended to fix the issue soon.
Q: Will fixing the P1D26 code improve my car's performance?
A: Fixing this code will restore the proper function of the A/C system but may not affect overall engine performance.
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