Drive Motor Phase U Current High
The P0A68 code indicates that the current in phase U of the drive motor is higher than the expected range. This is typically caused by a short circuit, open circuit, or excessive resistance in the motor windings or wiring, or a malfunctioning motor control module. The hybrid powertrain control module monitors the current and sets this code when it detects an anomaly, which can lead to reduced motor performance or complete loss of propulsion.
01. Most Common Causes
- Short circuit in motor phase U wiring
- Open circuit in motor phase U wiring
- Faulty drive motor control module
- Internal motor winding failure
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced motor power or performance
- Vehicle may enter limp mode
- Unusual noises from the motor area
03. Step-by-Step Diagnosis
Step 1: Use a scan tool to confirm the code and check for related codes.
Step 2: Visually inspect the motor and inverter wiring for damage, corrosion, or loose connections.
Step 3: Measure resistance and continuity of phase U wiring and motor windings using a multimeter.
Step 4: Test the drive motor control module for proper operation and replace if faulty.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
No, it is not safe to drive with this code as it can cause sudden loss of motor power or damage to the inverter and motor. Have the vehicle towed to a repair shop.
How much does it cost to fix?▼
The cost to diagnose and repair a P0A68 code typically ranges from $50 to $150 for diagnosis, plus parts and labor for repairs, which can vary widely depending on the root cause.