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 B164D-00: CAN Time-Out WPC: General Description
The Controller Area Network (CAN) Bus is used where data needs to be exchanged between modules. The CAN Bus is used to minimize the delay between the occurrence of a change in a sensor value, and the reception of this information by the control device using the information to adjust the vehicle system performance. The CAN network consists of two twisted wires; one signal circuit is identified as CAN-High and the other signal circuit is identified as CAN-Low. At each end of the data bus there is a 120 Ξ© termination resistor between the CAN-High and CAN-Low circuits. When the CAN-High signal circuit is driven higher, to about 3.5V, and the CAN-Low circuit is driven lower, to about 1.5V, the differential voltage becomes approximately 2.0V (+/- 0.5).
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.