P0A86 Fault Code

14 Volt Power Module Current Sensor Circuit

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

The P0A86 code refers to an issue with the 14 Volt Power Module Current Sensor Circuit in hybrid and electric vehicles. This circuit is responsible for monitoring the current flow to and from the power module, which is essential for the proper functioning of the vehicle's hybrid system.

What are the symptoms of the P0A86 code?

Vehicle owners may experience several symptoms when this fault is present, such as:

• Warning lights illuminated on the dashboard, particularly the check engine light.
• Reduced power output or altered performance of the hybrid system.
• Possible overheating issues or strange electrical behaviors while driving.
• Difficulty starting the vehicle or intermittent power losses.

What causes the P0A86 code?

The P0A86 fault code can be triggered due to various reasons including:

• A malfunctioning current sensor within the power module.
• Wiring issues such as short circuits, open circuits or damaged connections in the sensor circuit.
• Faulty or corroded connectors that impede proper electric flow and sensor communication.
• A failed power module itself affecting sensor operations.

How to fix P0A86?

To resolve the P0A86 fault code, you should:

• Conduct a thorough diagnostic check using an OBD-II scanner to confirm the fault.
• Inspect the wiring and connector integrity for damage, corrosion, or loose connections in the current sensor circuit.
• Replace the faulty current sensor if it is not functioning correctly.
• Test the power module and replace it if it is found to be defective.
• Clear the error codes and monitor the vehicle for reoccurrence of the issue.