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 has detected a problem with the wire that wakes up the battery sensor. It's like when your alarm clock doesn't ring in the morning, so you don't wake up on time.
The P15C5 code is triggered when the vehicle's computer detects a high voltage condition in the battery sensor wakeup cable circuit.
The battery sensor wakeup cable circuit is responsible for activating the battery sensor, which monitors the battery's state and sends information to the vehicle's control modules. A high voltage condition indicates a potential short circuit, poor connection, or faulty sensor.
• Check engine light is on
• Battery warning light may illuminate
• Potential battery charging issues
• Faulty battery sensor
• Damaged or corroded wiring
• Poor electrical connection
OBD-II: On-Board Diagnostics, a standardized system for vehicle self-diagnostics and reporting.
Multimeter: A tool used to measure voltage, current, and resistance.
• Inspect the battery sensor and its connections for damage or corrosion.
• Check the voltage levels in the wakeup cable circuit.
• Test the battery sensor for proper operation.
• Replace the faulty battery sensor.
• Repair or replace damaged wiring.
• Ensure all connections are secure and corrosion-free.
• Multimeter
• Wire repair kit
• OBD-II scanner
$100 - $300
Moderate
• Chevrolet Malibu
• GMC Sierra
• Buick Enclave
• Regularly inspect battery connections.
• Keep battery terminals clean and free of corrosion.
• Ensure wiring is not damaged or frayed.
Sensor Issue
• Have your vehicle inspected by a professional if you notice battery-related warnings.
• Avoid DIY repairs unless you have proper tools and knowledge.
Check your vehicle's warranty to see if battery sensor issues are covered.
This code is relatively uncommon and typically appears in vehicles with electrical system issues.
Moderate – While the vehicle may still operate, addressing this issue promptly can prevent further electrical problems.
Ignoring electrical issues can lead to vehicle malfunctions and safety hazards.
• Vehicle in 'On' position
• Battery fully charged
The battery sensor is typically located near the vehicle's battery, often attached to the negative terminal.
Q: Can I drive with a P15C5 code?
A: It's possible to drive, but it's recommended to fix the issue to avoid potential battery problems.
Q: How do I reset the check engine light after repair?
A: Use an OBD-II scanner to clear the code after repairs are completed.
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