Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the sensor that checks the temperature of the liquid cooling the battery in a hybrid or electric car.
The P1C43 code is triggered when the vehicle's computer detects an issue with the performance of the temperature sensor that monitors the coolant outlet of the hybrid or electric vehicle's battery pack.
The P1C43 code indicates a performance issue with the temperature sensor circuit responsible for monitoring the coolant outlet of the hybrid or EV battery pack. This sensor ensures that the battery pack is operating within safe temperature limits by monitoring the temperature of the coolant exiting the battery pack.
• Check Engine Light is on
• Reduced vehicle performance
• Possible overheating of the battery pack
• Faulty coolant outlet temperature sensor
• Wiring issues such as a short or open circuit
• Poor electrical connections in the sensor circuit
OBD-II: On-Board Diagnostics, a standardized system for vehicle self-diagnostics and reporting.
Coolant: A fluid used to transfer heat away from engine or battery components.
• Use an OBD-II scanner to confirm the code
• Inspect the wiring and connectors for damage
• Test the coolant outlet temperature sensor for proper operation
• Replace the faulty coolant outlet temperature sensor
• Repair or replace damaged wiring or connectors
• Clear the code and test drive the vehicle to ensure the issue is resolved
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regularly inspect and maintain the cooling system
• Ensure proper electrical connections
• Schedule routine vehicle diagnostics
Sensor Issue
• Avoid driving the vehicle aggressively until the issue is resolved
• Monitor the vehicle for any unusual behavior
• Seek professional diagnostic assistance if unsure
Check with your vehicle manufacturer for specific warranty coverage on hybrid/EV components.
This code has become more prevalent with the increase in hybrid and electric vehicles, as thermal management of battery packs is crucial for performance and longevity.
Moderate – It should be addressed soon to prevent potential battery damage.
Ignoring this issue could lead to battery overheating, which may cause safety hazards or damage to the vehicle.
• Vehicle at operating temperature
• Ensure vehicle is in a safe environment for testing
The coolant outlet temperature sensor is typically located near the battery pack, in the coolant line that exits the battery.
Q: Can I drive with a P1C43 code?
A: It's not recommended to drive for extended periods as it may lead to battery overheating.
Q: How do I clear a P1C43 code?
A: After repairs, use an OBD-II scanner to clear the code, but ensure the issue is fixed to prevent recurrence.
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