Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer is having trouble reading temperature information from parts that help charge the car's battery.
The car's computer is not able to correctly match the temperature readings from two sensors related to the charging system.
The P1C85 code indicates a discrepancy between the temperature readings from the DC/DC converter resonant inductor temperature sensor and the transformer temperature sensor. These sensors are part of the vehicle's charging system, and their readings should correlate to ensure proper operation.
• Check engine light is on
• Charging system warning light
• Reduced charging efficiency
• Faulty temperature sensor
• Wiring issues between sensors and control module
• Faulty Universal Charger Extension Control Module
DC/DC Converter: A device that converts direct current from one voltage level to another.
Resonant Inductor: A component that helps regulate electrical flow in a circuit.
• Use an OBD-II scanner to confirm the code
• Inspect wiring and connectors for damage
• Test the temperature sensors for proper operation
• Replace faulty temperature sensor
• Repair or replace damaged wiring
• Replace the Universal Charger Extension Control Module if necessary
• OBD-II scanner
• Multimeter
• Wiring repair tools
$200 - $800
Moderate
• Chevrolet Volt
• Nissan Leaf
• Toyota Prius
• Regular maintenance checks
• Ensure proper battery charging habits
• Inspect charging system components periodically
Sensor Issue
• Avoid using the vehicle's charging system until repaired
• Consult with a professional mechanic for accurate diagnosis
Check with the vehicle manufacturer for warranty coverage on the charging system components.
This code has been reported in hybrid and electric vehicles due to the complexity of their charging systems.
Moderate – It is important to address this issue to ensure the vehicle's charging system functions correctly.
Ignoring this issue may lead to reduced charging efficiency and potential battery damage.
• Vehicle in 'ON' position
• Charging system active
The sensors are typically located near the DC/DC converter and transformer within the vehicle's charging system.
Q: Can I drive with this code?
A: It's best to avoid using the vehicle's charging system until the issue is resolved to prevent further damage.
Q: Will this code affect my car's performance?
A: It may not affect immediate performance, but it can reduce charging efficiency and lead to battery issues.
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