Need a
Repair Manual?
P0C45 OBD2: Hybrid Battery Pack Coolant Temperature Sensor Circuit High

P0C45 OBD2: Hybrid Battery Pack Coolant Temperature Sensor Circuit High

What Does the P0C45 Code Mean?

The P0C45 code indicates an issue with the hybrid battery pack coolant temperature sensor circuit, specifically reporting a high value. This can lead to the hybrid vehicle’s high voltage system not starting properly, especially in cold weather conditions.

What Causes the P0C45 Code?

The P0C45 code can be triggered by several factors, including:

  • Battery Energy Control Module (BECM) failure
  • High voltage battery pack coolant temperature sensor failure
  • Wiring issues within the circuit

What Are the Symptoms of the P0C45 Code?

Common symptoms associated with the P0C45 code include:

  • The high voltage system may not start in cold weather

How Serious Is the P0C45 Code?

The P0C45 code is classified as urgent and indicates an immediate need for diagnosis and repair. Delaying action may lead to significant vehicle damage or safety risks.

How to Diagnose the P0C45 Code

Diagnosing the P0C45 code generally involves the following steps:

  1. Use an OBD-II scanner to confirm the presence of the P0C45 code.
  2. Inspect the wiring and connectors associated with the coolant temperature sensor for damage or corrosion.
  3. Test the coolant temperature sensor for proper operation.
  4. Check the Battery Energy Control Module (BECM) for faults.

Common Repairs for the P0C45 Code

Typical repairs for the P0C45 code may include:

  • Replacing the high voltage battery pack coolant temperature sensor
  • Repairing or replacing damaged wiring or connectors
  • Resetting or replacing the Battery Energy Control Module (BECM)

How Much Does It Cost to Fix the P0C45 Code?

The cost to fix the P0C45 code can vary widely based on the specific diagnosis and repairs needed. On average, repairs may range from $150 to $1,000, depending on whether a sensor replacement or more extensive electrical work is required.

Can I Fix the P0C45 Code Myself?

While some basic diagnostic procedures can be performed at home, it is advisable to consult with a professional mechanic for accurate diagnosis and repairs. The complexities involved with hybrid systems may require specialized knowledge and tools.

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.

Leave a Reply

Your email address will not be published. Required fields are marked *

;