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P0AE7 OBD2: Hybrid Battery Precharge Contactor Control Circuit High

P0AE7 OBD2: Hybrid Battery Precharge Contactor Control Circuit High

What Does the P0AE7 Code Mean?

The P0AE7 code indicates a problem with the Hybrid Battery Precharge Contactor Control Circuit, specifically signaling that the control circuit is high. This means that the High Voltage Control Module has detected an issue with the relay responsible for managing the hybrid battery system.

What Causes the P0AE7 Code?

Several factors can trigger the P0AE7 code, including:

  • Faulty high voltage control module
  • Failure of the high voltage system relay
  • Wiring issues within the high voltage system
  • Auxiliary 12V battery failure

What Are the Symptoms of the P0AE7 Code?

Common symptoms associated with the P0AE7 code may include:

  • Warning lights on the dashboard
  • Decreased hybrid system performance
  • Vehicle may enter a limp mode

How Serious Is the P0AE7 Code?

The P0AE7 code is categorized as urgent. It indicates a significant malfunction that can lead to severe vehicle damage or pose a safety risk to the driver and passengers. Immediate attention is recommended to prevent further issues.

How to Diagnose the P0AE7 Code

To properly diagnose the P0AE7 code, a mechanic will typically perform the following steps:

  • Use an OBD-II scanner to confirm the presence of the code.
  • Inspect the wiring and connectors associated with the high voltage control module.
  • Test the high voltage system relay to ensure it is functioning correctly.
  • Check the auxiliary 12V battery for any signs of failure.

Common Repairs for the P0AE7 Code

Repairs for the P0AE7 code may include:

  • Replacing the high voltage control module
  • Repairing or replacing the high voltage system relay
  • Fixing wiring issues
  • Replacing the auxiliary 12V battery

How Much Does It Cost to Fix the P0AE7 Code?

The cost to repair the P0AE7 code can vary significantly based on the specific issue, ranging from $100 to $1,000 or more depending on the repair needed, such as replacing the control module or relay.

Can I Fix the P0AE7 Code Myself?

While some basic troubleshooting may be possible for a knowledgeable DIY mechanic, fixing the P0AE7 code often requires specialized tools and knowledge of hybrid vehicle systems. It is recommended to seek professional assistance to ensure proper diagnosis and repair.

About JC Landry

JC is the Senior Editor at eManualOnline.com, GarageSpot.com, and Drive-My.com, as well as the Webmaster of TheMechanicDoctor.com, only to name a few. He's been a certified Master Mechanic for 15 years, working for various car dealers and specialized repair shops before turning towards blogging about cars and EVs in the hope of helping the next generation of automotive technicians. He also loves cats, Johnny Cash and Subarus.

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