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 a part of your car's charging system is reading too much current, which isn't normal.
The P1C73 code indicates that the current sensor in the DC/DC converter circuit of the Universal Charger Extension Control Module is detecting a current level that is higher than expected.
The Universal Charger Extension Control Module monitors the current flowing through the DC/DC converter. If the current sensor detects a current level that is higher than the predefined threshold, it triggers the P1C73 code. This could be due to a fault in the sensor, wiring issues, or a malfunctioning converter.
• Check engine light on
• Charging system warning light
• Reduced charging efficiency
• Faulty current sensor
• Wiring issues or short circuits
• Malfunctioning DC/DC converter
DC/DC Converter: A device that converts direct current (DC) from one voltage level to another.
Current Sensor: A device that detects and measures electrical current.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections to the current sensor.
• Test the functionality of the DC/DC converter.
• Replace the faulty current sensor.
• Repair or replace damaged wiring.
• Replace the DC/DC converter if necessary.
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $500
Moderate
• Chevrolet Volt
• Nissan Leaf
• Tesla Model S
• Regular maintenance of the charging system
• Ensure proper electrical connections
• Monitor charging system performance
Sensor Issue
• Do not ignore the warning light.
• Consult a professional mechanic if unsure.
• Avoid using the vehicle for long trips until repaired.
Check with the vehicle manufacturer for warranty coverage on electrical components.
This code has been associated with issues in electric and hybrid vehicles' charging systems.
Moderate – It should be addressed soon to avoid potential charging system failures.
Driving with a malfunctioning charging system can lead to vehicle performance issues and potential safety hazards.
• Vehicle in 'ON' position
• Charging system active
The DC/DC converter and current sensor are typically located near the vehicle's battery or charging system module.
Q: Can I drive with a P1C73 code?
A: It's not recommended as it could lead to charging issues. Have it checked by a mechanic.
Q: How do I reset the P1C73 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue persists, further diagnosis is needed.
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