Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means the car's computer found a problem with the part that checks the voltage in the charging system. It's like if a battery tester wasn't working right.
The vehicle's control module has detected a low voltage signal from the DC/DC converter voltage sensor circuit.
The P1C79 code indicates that the Universal Charger Extension Control Module has detected a low voltage condition in the DC/DC converter voltage sensor circuit. This could be due to a fault in the sensor itself, the wiring, or the control module.
• Check engine light illuminated
• Charging system warning light on
• Possible battery charging issues
• Faulty DC/DC converter voltage sensor
• Damaged wiring or connectors
• Malfunctioning Universal Charger Extension Control Module
DC/DC Converter: A device that converts direct current (DC) from one voltage level to another.
Voltage Sensor: A component that measures the electrical voltage in a system.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage.
• Test the DC/DC converter voltage sensor for proper operation.
• Replace the faulty DC/DC converter voltage sensor.
• Repair or replace damaged wiring or connectors.
• Replace the Universal Charger Extension Control Module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Chevrolet Volt
• Nissan Leaf
• Toyota Prius
• Regularly inspect charging system components.
• Ensure all electrical connections are secure.
• Perform routine maintenance checks.
Sensor Issue
• Avoid driving long distances until the issue is resolved.
• Have the vehicle inspected by a professional mechanic.
Check with the vehicle manufacturer for warranty coverage on electrical components.
This code has been associated with hybrid and electric vehicles experiencing charging system issues.
Moderate – Address the issue soon to prevent potential charging system failures.
Driving with a faulty charging system can lead to battery failure and potential vehicle shutdown.
• Vehicle in 'On' position
• Charging system operational
The DC/DC converter is typically located near the battery or within the engine compartment.
Q: Can I drive with the P1C79 code?
A: It's best to have the issue checked as soon as possible to avoid potential battery problems.
Q: What happens if I ignore this code?
A: Ignoring the code could lead to battery charging issues and potential vehicle shutdown.
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