P0A68 Fault Code

Drive Motor "B" Phase U Current High

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0A68 fault code indicates an issue with the drive motor 'B' phase U current being too high. This typically points to a problem within the electric motor, the wiring, or the inverter that controls the motor. Identifying the correct root cause is crucial to ensure efficient troubleshooting and repair.

What are the symptoms of the P0A68 code?

Vehicles experiencing a P0A68 fault code may exhibit various symptoms such as:

• Warning lights on the dashboard, typically the check engine or hybrid system warning
• Reduced power or performance from the electric drive motor
• Intermittent or complete loss of propulsion
• Unusual noises from the motor or drive components
• Potential overheating of the drive system in severe cases.

What causes the P0A68 code?

Several factors can contribute to a P0A68 fault code, including:

• A short circuit in the drive motor circuits
• Faulty motor windings or connections
• Problems with the inverter or related components
• Overcurrent conditions due to excessive load or failure of the drive system
• A malfunctioning or failed sensor providing inaccurate current feedback.

How to fix P0A68?

To resolve the P0A68 issue, the following steps are recommended:

• Inspect wiring and connections for damage, corrosion or shorts
• Test the drive motor and its windings for continuity and resistance values
• Check the inverter and control circuits for faults or malfunctions
• Replace any faulty components as necessary
• Clear codes and perform a road test to ensure the issue has been resolved.