P0EB5: A/C Compressor Motor Phase V Current Sensor Circuit High

P0EB5 is the high-range fault of the phase V current sensor in the compressor inverter. The reading lies above the window the sensor can produce in normal service, which points to a short towards supply voltage, a defective sensing element or an internal fault in the power module rather than to real overcurrent. Unusually, the V-phase codes start with high, low and plausibility, while the general V circuit code comes later as P0EBB. No manufacturer documents P0EB5 publicly. GM's 2011 Volt detected a stuck V-phase sensor at standstill at plus 68 A or more under the older code P0D7C, Type B. The compressor drive is switched off, and refrigerant-based battery cooling may be lost with it. Related codes: P0EB6, P0EB7 and P0EBB.

Symptoms

• Compressor switched off, no cooling
• Battery may warm up more during fast charging

Most likely causes

• Defective phase V sensing element
• Phase V signal shorted towards supply voltage
• Internal fault in the compressor power module

What to check, in order

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

1. Check the sensor pressure in live data
2. Check the sensor's ground and make sure the signal wire is not receiving voltage from another circuit.
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 P0EB5 means

• P: Powertrain: engine and transmission
• 0: Generic code: same on every make
• E: Subsystem depends on the code range
• B5: Specific fault in that system

Frequently asked questions

Can I keep driving with code P0EB5?

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

What causes code P0EB5?

The most common causes are: defective phase V sensing element; phase V signal shorted towards supply voltage; internal fault in the compressor power module.

Related codes

• P0EB6A/C Compressor Motor Phase V Current Sensor Circuit Low
• P0EB7A/C Compressor Motor Phase V Current Sensor Range/Performance
• P0EBBA/C Compressor Motor Phase V Current Sensor Circuit
• P0EB2A/C Compressor Motor Phase U Current Sensor Circuit High
• P0EB8A/C Compressor Motor Phase W Current Sensor Circuit High
• P0D7CA/C Compressor Motor Phase V Current Low

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.