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 conditioner has a sensor that checks the voltage (or power level) for the motor that helps cool the car. This error means the sensor is detecting less power than it should, like a flashlight with weak batteries.
The P0EAB code indicates that the voltage sensor for the A/C compressor motor is reading a voltage lower than expected, suggesting a problem with the electrical circuit.
The A/C compressor motor voltage sensor B circuit is responsible for monitoring the voltage supplied to the A/C compressor motor. A 'circuit low' condition means that the voltage detected is below the manufacturer's specified range, which could be due to a wiring issue, a faulty sensor, or a problem with the A/C compressor motor itself.
• A/C not cooling effectively
• Check Engine Light illuminated
• Unusual noises from the A/C system
• Faulty A/C compressor motor voltage sensor
• Damaged or corroded wiring or connectors
• Faulty A/C compressor motor
A/C: Air Conditioning
Compressor: A device that compresses refrigerant in the A/C system
Voltage Sensor: A sensor that measures the electrical voltage in a circuit
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the A/C compressor motor voltage sensor for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the A/C compressor motor voltage sensor if faulty.
• Replace the A/C compressor motor if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regularly check and maintain the A/C system.
• Ensure electrical connections are clean and secure.
• Schedule routine vehicle inspections.
Sensor Issue
• If the A/C isn't working, avoid using it until repaired to prevent further damage.
• Have a professional diagnose and fix the issue to ensure proper repair.
Check with your vehicle manufacturer for specific warranty coverage on A/C components.
This code is relatively rare and typically appears in hybrid or electric vehicles with advanced A/C systems.
Moderate – While not immediately critical, it should be addressed to maintain A/C functionality.
Operating a vehicle with a malfunctioning A/C system may lead to discomfort and reduced visibility if defogging is affected.
• Vehicle engine running
• A/C system activated
The A/C compressor motor voltage sensor is typically located near the A/C compressor, often in the engine bay.
Q: Can I drive with a P0EAB code?
A: Yes, but your A/C may not work properly, which can be uncomfortable in hot weather.
Q: How can I prevent this code from appearing?
A: Regular maintenance and inspections of the A/C system can help prevent issues.
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