P0EB6: A/C Compressor Motor Phase V Current Sensor Circuit Low

P0EB6 reports that the phase V current signal reads below its permissible minimum. The compressor's power module cannot regulate phase V without it and stops the motor. Candidates are a sensing path pulled to ground, a sensor that has lost its supply or a defect on the inverter board; a problem in the refrigerant circuit cannot produce this code. No manufacturer documents P0EB6 publicly. In the first-generation Chevrolet Volt, GM treated minus 68 A or lower on phase V with the motor at rest as a sensor fault (older code P0D7D, 30 of 60 samples, Type B). Because the sensor is built in, replacing the compressor unit is the normal fix. High range: P0EB5; general V circuit: P0EBB; the phase U and W equivalents are P0EB3 and P0EB9.

Symptoms

• No air conditioning
• Fault stored in the compressor control module

Most likely causes

• Phase V sensing path pulled to ground
• Phase V sensor has lost its supply
• Defect in the V channel of the inverter board

What to check, in order

Start with the simplest. You can tick off each step.

1. Check the sensor pressure in live data
2. With the connector unplugged, check whether the signal wire is making contact with ground.
3. Check the relay and connector
4. Have the refrigerant charge and any leaks checked at a repair shop authorized to handle refrigerant

What each character of P0EB6 means

• P: Powertrain: engine and transmission
• 0: Generic code: same on every make
• E: Subsystem depends on the code range
• B6: Specific fault in that system

Frequently asked questions

Can I keep driving with code P0EB6?

Yes, you can keep driving. The air conditioning may not work.

What causes code P0EB6?

The most common causes are: phase V sensing path pulled to ground; phase V sensor has lost its supply; defect in the V channel of the inverter board.

Related codes

• P0EB5A/C Compressor Motor Phase V Current Sensor Circuit High
• P0EB7A/C Compressor Motor Phase V Current Sensor Range/Performance
• P0EBBA/C Compressor Motor Phase V Current Sensor Circuit
• P0EB3A/C Compressor Motor Phase U Current Sensor Circuit Low
• P0EB9A/C Compressor Motor Phase W Current Sensor Circuit Low
• P0D7DA/C Compressor Motor Phase V Current High

Sources

• gsi.ext.gm.com: 11OBDG01 HYBRID Diagnostics
• law.cornell.edu: 13 CCR 1968.2

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.