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P0C87 OBD2: Hybrid Battery Temperature Sensor "G"/"H" Correlation

P0C87 OBD2: Hybrid Battery Temperature Sensor “G”/”H” Correlation

The P0C87 code is a diagnostic trouble code (DTC) that indicates a correlation issue between the Hybrid Battery Temperature Sensors “G” and “H”. This code is part of the OBD-II system, which monitors various sensors and components in hybrid vehicles to ensure optimal performance and safety.

What Does the P0C87 Code Mean?

The P0C87 code signifies that there is an inconsistency between the readings from two specific temperature sensors monitoring the battery pack. These sensors are crucial for maintaining the health of the hybrid battery by ensuring that all cells operate within safe temperature ranges.

What Causes the P0C87 Code?

The P0C87 code can be triggered by several factors, including:

  • High voltage battery assembly failure
  • High voltage battery interface control module failure
  • Wiring issue associated with the battery temperature sensors
  • Faulty temperature sensors themselves

What Are the Symptoms of the P0C87 Code?

Common symptoms associated with the P0C87 code include:

  • Warning lights on the dashboard, including the check engine light
  • Reduced performance of the hybrid vehicle
  • Possible disabling of the High Voltage System
  • Increased charging time for the hybrid battery

How Serious Is the P0C87 Code?

The P0C87 code is classified as urgent, indicating that immediate action is necessary. Ignoring this code can lead to severe damage to the hybrid battery system, potentially risking safety for the driver and passengers.

How to Diagnose the P0C87 Code

To properly diagnose the P0C87 code, a mechanic should follow these steps:

  • Use an OBD-II scanner to confirm the presence of the P0C87 code.
  • Inspect the wiring and connections associated with the battery temperature sensors for any signs of damage or corrosion.
  • Test the temperature sensors for proper operation.
  • Check the battery assembly and control module for any faults.

Common Repairs for the P0C87 Code

Repairs for the P0C87 code may include:

  • Replacing faulty temperature sensors
  • Repairing or replacing damaged wiring
  • Replacing the high voltage battery assembly or control module, if necessary

How Much Does It Cost to Fix the P0C87 Code?

The cost to fix the P0C87 code can vary widely depending on the specific repairs needed. On average, repairs could range from $200 to $1,500, depending on whether sensors, wiring, or the battery assembly need to be replaced.

Can I Fix the P0C87 Code Myself?

While some basic diagnostics and repairs, such as checking wiring connections, can be done by a DIY enthusiast, it is recommended to consult a professional mechanic for accurate diagnosis and repair of the P0C87 code. This ensures that all underlying issues are addressed properly to avoid further complications.

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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