P0C45
Hybrid/EV Battery Pack Coolant Temperature Sensor A Circuit High
P0C45 is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Pack Coolant Temperature Sensor A Circuit High. Common causes: coolant temperature sensor malfunction, open or short circuit in wiring. Estimated repair cost: $28–89.
Symptoms
- Check Engine Light Is On
- Hybrid system power reduction
- Battery overheating
- Switching to emergency mode
- Increased fuel consumption (for hybrids)
Causes
- Coolant temperature sensor malfunction
- Open or short circuit in wiring
- Poor contact in the sensor connector
- Problems with the hybrid system control module
- Contact corrosion
How to Fix
- Check the integrity of the wiring and connectors
- Measure the resistance of the temperature sensor
- Check for errors in the hybrid system control module
- Replace temperature sensor if necessary
- Clean corrosion from contacts
Related codes
Error P0C45 by Vehicle Brand
FAQ
What does the P0C45 code mean?
P0C45 is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Pack Coolant Temperature Sensor A Circuit High
What causes a P0C45 error code?
The most common causes of P0C45 include: Coolant temperature sensor malfunction; Open or short circuit in wiring; Poor contact in the sensor connector; Problems with the hybrid system control module.
How do I fix a P0C45 diagnostic trouble code?
To fix P0C45: Check the integrity of the wiring and connectors. Measure the resistance of the temperature sensor. Check for errors in the hybrid system control module. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0C45?
Do not drive — repair immediately
How much does it cost to fix P0C45?
The estimated repair cost for P0C45 is $28–89. Actual cost depends on your vehicle, location, and labor rates.
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