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 of the motor. This code means something is wrong with that sensor or the wires connected to it.
This code indicates a problem with the voltage sensor circuit for the A/C compressor motor, specifically circuit 'B'.
The P0EA8 code is set when the Powertrain Control Module (PCM) detects a malfunction in the voltage sensor circuit of the A/C compressor motor, specifically in the 'B' circuit. This could be due to an open or short circuit, faulty sensor, or issues with the wiring or connectors.
• A/C system not working properly
• Check engine light illuminated
• Unusual noises from the A/C system
• Faulty A/C compressor motor voltage sensor
• Open or short circuit in the sensor wiring
• Poor electrical connection in the sensor circuit
A/C: Air Conditioning
PCM: Powertrain Control Module
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the voltage sensor for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the faulty A/C compressor motor voltage sensor.
• Clear the code and test drive to verify the fix.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regularly inspect A/C system wiring.
• Ensure connectors are clean and secure.
• Schedule routine maintenance checks.
Sensor Issue
• Do not ignore the check engine light.
• Have the A/C system inspected if cooling performance decreases.
Check with your vehicle manufacturer for warranty coverage on the A/C system.
This code is more common in hybrid and electric vehicles due to their complex A/C systems.
Moderate – It is important to address this issue to ensure proper A/C function and avoid further damage.
Driving with a malfunctioning A/C system can lead to discomfort and potential safety issues during extreme weather conditions.
• Vehicle engine running
• A/C system activated
The A/C compressor motor voltage sensor is typically located near the A/C compressor in the engine bay.
Q: Can I drive with this code?
A: Yes, but the A/C system may not work properly, and it should be fixed soon to avoid further issues.
Q: Will this code affect my car's performance?
A: It primarily affects the A/C system, so engine performance should not be impacted.
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