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P0A55 OBD2: Drive Motor "B" Current Sensor Circuit

P0A55 OBD2: Drive Motor “B” Current Sensor Circuit

What Does the P0A55 Code Mean?

The P0A55 code is associated with the Drive Motor “B” Current Sensor Circuit. It is an OBD-II fault code that indicates issues with the high voltage system related to the hybrid control module.

What Causes the P0A55 Code?

This code can be triggered when the hybrid control module performs self-checks and fails to meet the required operational standards. If the module fails during these checks, it will set the P0A55 code, indicating a malfunction in the current sensor circuit.

What Are the Symptoms of the P0A55 Code?

  • High voltage system may not operate
  • Potential loss of hybrid functionality

How Serious Is the P0A55 Code?

The P0A55 code is categorized as urgent. It indicates a significant malfunction that can lead to severe damage to the vehicle’s hybrid system, potentially affecting the safety of the driver and passengers.

How to Diagnose the P0A55 Code

Diagnosing the P0A55 code requires a thorough inspection of the hybrid control module and associated circuitry. Using an OBD-II scanner can help confirm the presence of the code. A mechanic should also perform tests to check the functionality of the current sensor and the overall hybrid system.

Common Repairs for the P0A55 Code

  • Replacing the high voltage control module
  • Repairing or replacing damaged wiring or connectors related to the current sensor circuit

How Much Does It Cost to Fix the P0A55 Code?

The cost to repair the P0A55 code can vary widely depending on the root cause of the issue. Typical expenses range from $200 to $1,500, depending on whether you need to replace the high voltage control module or repair wiring.

Can I Fix the P0A55 Code Myself?

While some DIY enthusiasts may attempt to address minor wiring issues, it is generally recommended to seek professional assistance for P0A55 code repairs. The complexity of the hybrid system and the potential safety risks involved make professional diagnosis and repair the safer choice.

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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