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 getting a signal from a sensor that measures voltage, and the signal is too high. It's like if you had a thermometer that was telling you it was way too hot when it wasn't.
The code P1C4C indicates an issue with the voltage sensor circuit in the Universal Charger Extension Control Module, where the voltage reading is higher than expected.
The P1C4C code is triggered when the vehicle's control module detects a voltage level in the crash clamp voltage sensor circuit that is above the normal operating range. This could be due to a malfunctioning sensor, wiring issues, or a fault in the control module itself.
• Warning light on the dashboard
• Charging issues
• Possible loss of certain electrical functions
• Faulty voltage sensor
• Wiring issues or short circuits
• Malfunctioning control module
Voltage Sensor: A device that measures the electrical voltage in a circuit.
Control Module: An electronic unit that manages various functions in a vehicle.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections to the voltage sensor.
• Test the voltage sensor for proper operation.
• Replace the faulty voltage sensor.
• Repair or replace damaged wiring.
• Replace the control module if necessary.
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $500
Moderate
• Vehicle 1
• Vehicle 2
• Vehicle 3
• Regular maintenance checks
• Ensure proper wiring connections
• Use quality replacement parts
Sensor Issue
• Do not ignore warning lights on the dashboard.
• Have the vehicle checked by a professional if unsure.
• Regularly maintain the vehicle's electrical system.
Check with the vehicle manufacturer for warranty coverage on electrical components.
This code has been associated with issues in vehicles with advanced charging systems, particularly in hybrid and electric models.
Moderate – It should be addressed soon to prevent potential charging issues.
Driving with electrical faults can lead to further damage or safety issues. Always address warning lights promptly.
• Vehicle stationary
• Battery fully charged
The Universal Charger Extension Control Module is typically located near the vehicle's battery or charging port.
Q: Can I drive with the P1C4C code?
A: It's not recommended to drive for extended periods with this code, as it may lead to charging issues.
Q: How can I reset the P1C4C code?
A: The code can be reset using an OBD-II scanner, but it's important to fix the underlying issue first.
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