Drive Motor B Phase U V W Circuit Low

Common symptoms

What you'll notice

• Check for loose or damaged wiring connections in the motor B phase circuit
• Inspect the motor B phase connectors for corrosion or debris
• Test the motor B phase circuitry for continuity using a multimeter
• Verify the operation of the motor B phase sensor and replace if necessary
• If all else fails, consider replacing the motor itself to fix the issue

Common causes

Most likely first

1. Faulty drive motor B phase U V W circuit wiring
2. Defective drive motor B phase U V W circuit components
3. Electrical connection issues within the drive motor B phase U V W circuit
4. Malfunctioning drive motor control module
5. Defective drive motor B phase U V W circuit sensor

How to diagnose & fix

Work through it in order

1. Engine misfiring
2. Decreased engine power
3. Poor fuel efficiency
4. Difficulty starting the engine
5. Illuminated check engine light