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 found a problem with the temperature sensors that help keep the car's charging system cool. It's like when a thermometer isn't working right and you can't tell if it's too hot or cold.
The car's computer monitors the temperature sensors in the charging system to ensure they are working correctly. If the readings from these sensors don't match up as expected, it triggers this code.
The P1C5E code is set when the Powertrain Control Module (PCM) detects a discrepancy between the readings of the Universal Charger Extension Control Module Cooling System Temperature Sensor and the DC/DC Converter Temperature Sensor. This can indicate a fault in one or both sensors, or an issue with the wiring or connectors.
• Check engine light on
• Possible overheating of the charging system
• Reduced charging efficiency
• Faulty temperature sensor
• Wiring issues or poor connections
• Malfunctioning control module
PCM: Powertrain Control Module
DC/DC Converter: A device that converts direct current (DC) from one voltage level to another
• Use a scan tool to verify the code and check for other related codes.
• Inspect the wiring and connectors for damage or corrosion.
• Test the temperature sensors for proper operation.
• Replace the faulty temperature sensor.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the control module if necessary.
• OBD-II scan tool
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Chevrolet Volt
• Nissan Leaf
• Toyota Prius
• Regularly inspect and maintain the vehicle's cooling system.
• Ensure all electrical connections are secure and free of corrosion.
• Perform routine diagnostic checks.
Sensor Issue
• Avoid driving the vehicle until the issue is resolved to prevent further damage.
• Consult with a professional mechanic for an accurate diagnosis.
Check with the vehicle manufacturer for warranty coverage on the charging system components.
This code has become more common with the increased use of electric and hybrid vehicles, where precise temperature control is critical.
Moderate – It should be addressed soon to prevent potential damage to the charging system.
Driving with an unresolved issue may lead to further damage or reduced vehicle performance. Always consult a professional for repairs.
• Vehicle at operating temperature
• Stable electrical load
The temperature sensors are typically located near the DC/DC converter and the charger module, often in the engine bay or near the battery pack.
Q: Can I drive my car with a P1C5E code?
A: It's not recommended to drive for long periods with this code active, as it may lead to overheating or other issues.
Q: How do I reset the P1C5E code?
A: After repairs, use an OBD-II scan tool to clear the code. If the problem persists, the code will return.
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