P0AE2 Fault Code

Hybrid Battery Precharge Contactor Circuit Stuck Closed

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

The P0AE2 fault code indicates a problem with the Hybrid Battery Precharge Contactor Circuit, specifically when it is stuck in a closed position. This can prevent the hybrid system from properly functioning and recharging the battery as needed.

What are the symptoms of the P0AE2 code?

Symptoms associated with a P0AE2 fault code may include:

• Warning lights illuminated on the dashboard, particularly the hybrid or battery warning light
• Hybrid system failure to engage or operate efficiently
• Reduced fuel economy from the hybrid system
• In some cases, the vehicle may enter a limp mode to prevent further damage

What causes the P0AE2 code?

Common causes of this fault code include:

• Malfunctioning precharge contactor
• Electrical short or open circuit within the precharge circuit
• Corroded or damaged connectors
• Faulty battery management system (BMS) components
• Issues with the hybrid powertrain system itself

How to fix P0AE2?

To address the P0AE2 fault code, consider the following solutions:

• Inspect and test the precharge contactor for proper operation
• Check electrical connections and wiring for any signs of damage or corrosion
• Replace any faulty components identified during inspection
• Clear the fault code after repairs and perform a test drive to ensure normal operation