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

What it means

The phase V current sensor circuit for the A/C compressor motor is reporting a signal lower than expected. The module sets this code when the measured signal falls below its calibrated threshold.

How it works

The phase V current sensor reports current in the A/C compressor motor's V phase to the control module. P0EB6 sets when that circuit's signal falls below the module's calibrated lower limit.

Common causes

Most likely first.

1. Failed current sensor
2. Open or high-resistance wiring
3. Loose or corroded connector
4. A/C compressor inverter fault

Symptoms

• A/C may not cool or heat properly
• A/C warning light
• Hybrid or EV warning light

How to diagnose it

1. Check freeze-frame data and live phase V readings, comparing them with phase U data and the A/C operating state.
2. Inspect the phase V sensor connector and wiring for loose or corroded terminals, damaged insulation, and poor grounds.
3. Check the phase V signal, reference, and ground circuits for a short to ground, open, or excessive resistance using the manufacturer's specification.
4. Test the phase V sensor output under the service procedure and compare it with the expected response.
5. If the sensor circuit passes, check the compressor inverter for a phase V-related fault using the vehicle's diagnostic procedure.

Common fixes

• Reseat the phase V sensor connector and clean or repair corroded terminals.
• Repair an open, shorted, or high-resistance section of phase V wiring.
• Replace the phase V current sensor if it produces a low signal despite a sound circuit.
• Repair or replace the compressor inverter if testing confirms it is responsible.

Can I keep driving?

The A/C may fail to cool or heat as requested, but the code alone does not establish that the vehicle is unsafe to drive. Avoid relying on climate control for clear visibility, and follow any hybrid or EV warning instructions if they appear.