CAN Communication Bus Off


Table of contents

P1766 HYUNDAI Possible Causes

  • CAN Bus
  • ABS Module, TCCU connector looseness and poor terminal to wire connection
  • CAN comm line circuit open/short
  • Faulty ECU
  • Faulty ABS Module

How do I fix code P1766 HYUNDAI?

  Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.

Cost of diagnosing the P1766 HYUNDAI code

  The cost of diagnosing the P1766 HYUNDAI code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P1766 HYUNDAI Description

  Due to vehicle electronic control, many control units apply to the vehicle and these perform many controls by receiving signals from the sensor. So the common use among each sensor and the need of comunizing informations became a prominent figure. CAN communication method is used at power train (ABS, transmission, engine, ECS etc) control of vehicle because it withstands electronic external noise by generating spark and can high-speed communication. Though CAN communication, ECM, and TCM hold engine RPM, APS, step of transmission, decreasing of torque in common and perform the active control.

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