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P0B83 OBD2: Hybrid Battery Voltage Sense "O" Circuit Low

P0B83 OBD2: Hybrid Battery Voltage Sense “O” Circuit Low

The P0B83 code is an OBD-II trouble code that indicates a problem within the hybrid vehicle’s high voltage battery system, specifically relating to the voltage sense circuit.

What Does the P0B83 Code Mean?

The P0B83 code signifies that the High Voltage Control Module has detected a low voltage condition in the “O” circuit of the hybrid battery voltage sense. This circuit is crucial for monitoring the voltage levels of the hybrid battery pack, which consists of multiple mini-batteries connected together.

What Causes the P0B83 Code?

Several issues can trigger the P0B83 code, including:

  • High voltage battery connection failure
  • High voltage battery assembly failure
  • Wiring issues related to the voltage sense circuit

What Are the Symptoms of the P0B83 Code?

Common symptoms associated with the P0B83 code include:

  • Increased fuel consumption
  • Warning lights on the dashboard
  • Potential loss of hybrid system performance

How Serious Is the P0B83 Code?

The P0B83 code is classified as urgent, indicating that immediate attention is necessary. Ignoring this code could lead to severe damage to the hybrid battery system, significantly impacting vehicle performance and safety.

How to Diagnose the P0B83 Code

To diagnose the P0B83 code, a mechanic will typically follow these steps:

  • Use an OBD-II scanner to confirm the presence of the P0B83 code.
  • Inspect the high voltage battery connections for any signs of damage or corrosion.
  • Check the wiring associated with the voltage sense circuit for faults.
  • Test the voltage levels in the battery pack to ensure they are within the expected range.

Common Repairs for the P0B83 Code

Repairs for the P0B83 code may include:

  • Repairing or replacing damaged wiring or connectors.
  • Replacing faulty battery modules within the high voltage battery assembly.
  • Ensuring proper connections in the high voltage battery pack.

How Much Does It Cost to Fix the P0B83 Code?

The cost to fix the P0B83 code can vary significantly based on the underlying issue. Simple wiring repairs may cost around $100 to $300, while replacing high voltage battery components could range from $1,000 to $3,500 or more, depending on the vehicle model and labor costs.

Can I Fix the P0B83 Code Myself?

While some DIY enthusiasts with automotive knowledge may attempt to diagnose and repair the P0B83 code, it is recommended to seek professional assistance. Hybrid systems are complex and can pose safety risks if not handled correctly. Proper diagnosis and repair by a certified technician can save you time and money in the long run.

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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