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 having trouble with the electricity it needs to work properly.
The code P16E7 indicates an issue with the voltage supply to the internal control module, which is critical for the module's operation.
The internal control module relies on a stable voltage supply to function correctly. Code P16E7 is triggered when the voltage supply to the module is outside the expected range, which can affect the module's performance and the vehicle's operation.
• Check engine light is on
• Vehicle may not start
• Poor engine performance
• Faulty voltage supply circuit
• Weak or failing battery
• Poor electrical connections
Voltage: The electrical potential difference between two points.
Control Module: A computer in the vehicle that manages various functions.
• Check battery voltage and condition
• Inspect electrical connections for corrosion or damage
• Test the voltage supply circuit to the control module
• Replace or recharge the battery if necessary
• Clean and secure electrical connections
• Repair or replace faulty wiring in the voltage supply circuit
• Multimeter
• Battery tester
• Wrench set
$100 - $300
Moderate
• Chevrolet Malibu
• GMC Sierra
• Buick Enclave
• Regularly check and maintain battery health
• Ensure all electrical connections are clean and tight
• Perform routine vehicle inspections
Electrical Issue
• Have your vehicle inspected by a professional if the check engine light comes on
• Regularly maintain your vehicle's battery and electrical system
Check with your vehicle manufacturer for warranty coverage on electrical components.
This code has been associated with issues in vehicles with aging electrical systems, particularly in models with high mileage.
Moderate – The vehicle may still operate, but the issue should be addressed to prevent further problems.
Driving with a malfunctioning control module can lead to unsafe driving conditions and should be addressed promptly.
• Vehicle ignition in the 'ON' position
• Engine running
The internal control module is typically located under the dashboard or in the engine compartment.
Q: Can I drive my car with a P16E7 code?
A: It's not recommended to drive for long periods with this code, as it can affect vehicle performance and safety.
Q: How can I prevent this code from appearing?
A: Regular maintenance of the battery and electrical system can help prevent this issue.
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Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
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