Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC B2815-00: HS-CAN Error: General Description
The CAN communication consists of a twisted pair of network wires. One line is CAN low line and the other line is CAN high line. The CAN lines pass through the head unit (AVN or Audio) and AMP modules. This allows the TMU to communicate with each module. Through MM-CAN, TMU is communicating with head unit to make a display and sound in the vehicle.
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Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.