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 the car that helps charge the battery is not working right. It's like when your phone charger isn't plugged in correctly, so your phone doesn't charge.
The code P1C6A indicates an issue with the voltage sensor circuit in the Universal Charger Extension Control Module. This circuit is detecting a voltage level that is lower than expected.
The Universal Charger Extension Control Module is responsible for managing the charging process of the vehicle's battery. The DC link voltage sensor monitors the voltage levels within the module. If this sensor detects a voltage that is too low, it triggers the P1C6A code. This could be due to a malfunction in the sensor itself, a wiring issue, or a problem within the control module.
• Battery not charging properly
• Warning light on the dashboard
• Reduced vehicle performance
• Faulty DC link voltage sensor
• Wiring issues or poor connections
• Malfunctioning Universal Charger Extension Control Module
DC: Direct Current
Voltage Sensor: A device that measures the electrical voltage in a circuit
• Check for any other related trouble codes.
• Inspect the wiring and connections to the Universal Charger Extension Control Module.
• Test the DC link voltage sensor for proper operation.
• Repair or replace faulty wiring or connections.
• Replace the DC link voltage sensor if defective.
• Replace the Universal Charger Extension Control Module if necessary.
• Multimeter
• OBD-II scanner
• Basic hand tools
$200 - $600
Moderate
• Chevrolet Volt
• Nissan Leaf
• Toyota Prius
• Regular maintenance checks
• Ensure proper connections and wiring
• Use quality charging equipment
Sensor Issue
• Have your vehicle inspected by a professional if this code appears.
• Avoid using the vehicle until the issue is resolved to prevent further damage.
Check with your vehicle manufacturer for warranty coverage on electrical components.
This code has been reported in hybrid and electric vehicles where charging systems are critical.
Moderate – It should be addressed soon to ensure the vehicle charges properly.
Ignoring this issue could lead to battery failure, which may affect vehicle performance and safety.
• Vehicle in a safe, stationary position
• Battery fully charged
The Universal Charger Extension Control Module is typically located near the vehicle's battery or charging port.
Q: Can I drive my car with a P1C6A code?
A: It's not recommended, as the battery may not charge properly, leading to potential breakdowns.
Q: Is this a common issue?
A: It can occur in vehicles with complex charging systems, particularly hybrids and electric cars.
High-End · Full-system diagnostics
A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.
Network faults often require full-system access instead of a generic code reader alone.
View on Amazon
Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
View on Amazon
Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.