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P0B97 OBD2: Hybrid Battery Voltage Sense "S" Circuit Low

P0B97 OBD2: Hybrid Battery Voltage Sense “S” Circuit Low

What Does the P0B97 Code Mean?

The P0B97 code refers to an issue with the Hybrid Battery Voltage Sense “S” circuit, indicating that the voltage reading from the hybrid battery is lower than expected. This can occur when the High Voltage Control Module detects a malfunction in one or more of the mini-batteries that comprise the High Voltage Battery Pack.

What Causes the P0B97 Code?

Several factors can trigger the P0B97 code, including:

  • High voltage battery connection failure
  • High voltage battery assembly failure
  • Wiring issues within the high voltage battery system

What Are the Symptoms of the P0B97 Code?

Drivers may notice:

  • Increased fuel consumption

How Serious Is the P0B97 Code?

This code is considered urgent, as it indicates significant malfunctions that could lead to severe damage to the vehicle or pose risks to the driver and passengers. Immediate action is recommended to prevent further issues.

How to Diagnose the P0B97 Code

To diagnose the P0B97 code, a professional mechanic should:

  • Use an OBD-II scanner to confirm the code and check for any other related codes.
  • Inspect the high voltage battery connections for any signs of damage or corrosion.
  • Test the individual battery cells to determine if one or more are failing.
  • Examine the wiring and connectors for faults.

Common Repairs for the P0B97 Code

Repairs may include:

  • Repairing or replacing damaged wiring or connectors.
  • Replacing faulty battery cells or the entire high voltage battery assembly.
  • Ensuring all connections are secure and free from corrosion.

How Much Does It Cost to Fix the P0B97 Code?

The cost to fix the P0B97 code can vary widely based on the extent of the damage and the specific repairs required. Repairs can range from a few hundred to several thousand dollars, particularly if the high voltage battery assembly needs replacement.

Can I Fix the P0B97 Code Myself?

While some basic checks can be performed by a knowledgeable DIYer, fixing issues related to the high voltage battery and its components typically requires specialized tools and expertise. It is advisable to consult with a professional mechanic 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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