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 talking to one of the parts because it's not getting a response in time.
The code P16C6 indicates a communication issue where the CAN bus system is not receiving data from the BSD interface within the expected time frame.
The CAN (Controller Area Network) bus is a vehicle's communication network that allows various components to communicate with each other. The BSD (Bit Serial Data) interface is a protocol used for communication between certain components. A 'timeout' occurs when the expected data is not received within a specified time, indicating a potential issue with the component or the network.
• Warning light on the dashboard
• Intermittent communication issues
• Possible performance issues with affected components
• Faulty BSD interface component
• Wiring issues or poor connections
• Faulty CAN bus module
CAN: Controller Area Network
BSD: Bit Serial Data
• Check for any additional stored codes
• Inspect wiring and connections for damage or corrosion
• Test the BSD interface component for proper operation
• Repair or replace damaged wiring or connectors
• Replace faulty BSD interface component
• Reprogram or replace the CAN bus module if necessary
• OBD-II scanner
• Multimeter
• Wiring diagram
$150 - $500
Moderate
• BMW 3 Series
• BMW 5 Series
• Mini Cooper
• Regular maintenance checks
• Ensure all software updates are applied
• Inspect wiring for wear and tear
Communication Error
• Have a professional diagnose the issue to avoid further damage.
• Do not ignore the warning light as it may lead to more serious problems.
Check with the vehicle manufacturer for warranty coverage on electronic components.
This code has been more commonly reported in vehicles with complex electronic systems, especially those with integrated BSD interfaces.
Moderate – While the vehicle may still operate, unresolved communication issues can lead to further problems.
Driving with unresolved communication issues may affect vehicle performance and safety. It is recommended to address this issue promptly.
• Vehicle at operating temperature
• All electrical systems functioning
The BSD interface is typically located near the component it communicates with, such as the alternator or battery management system.
Q: Can I drive with a P16C6 code?
A: While you may be able to drive, it's best to get it checked as it could lead to further issues.
Q: What is a CAN bus?
A: CAN bus is a system that allows different parts of the car to communicate with each other.
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.