OBD Guide
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C1617

AWC CAN Main Data System

C1617 is an OBD-II diagnostic trouble code meaning: AWC CAN Main Data System. Common causes: damage to can bus wires (high/low), faulty or broken can termination resistor. Estimated repair cost: $33–333.

Severity
🔴 High
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$33–333 (est.)

Symptoms

  • AWD or AWC light is on
  • Multiple error codes in different vehicle systems
  • Disabling all-wheel drive
  • Unstable operation of the speedometer or tachometer
  • Loss of communication with one or more ECUs during diagnostics

Causes

  • Damage to CAN bus wires (High/Low)
  • Faulty or broken CAN termination resistor
  • Failure of one of the ECUs connected to the bus
  • Oxidation of connectors in the CAN bus circuit
  • AWC control unit malfunction

How to Fix

  1. Connect a multi-system scanner and read codes from all computers
  2. Check the CAN-High and CAN-Low signals with an oscilloscope for compliance with the standard
  3. Measure the resistance of the CAN bus between the contacts (normal ~60 Ohm)
  4. Inspect the CAN connectors and wiring in the area of the AWC unit
  5. Check the power and ground of the AWC control unit
  6. Contact your dealer for software diagnostics of the CAN bus

Related codes

C1610C141CC1618U0100U0121

FAQ

What does the C1617 code mean?

C1617 is an OBD-II diagnostic trouble code that indicates: AWC CAN Main Data System

What causes a C1617 error code?

The most common causes of C1617 include: Damage to CAN bus wires (High/Low); Faulty or broken CAN termination resistor; Failure of one of the ECUs connected to the bus; Oxidation of connectors in the CAN bus circuit.

How do I fix a C1617 diagnostic trouble code?

To fix C1617: Connect a multi-system scanner and read codes from all computers. Check the CAN-High and CAN-Low signals with an oscilloscope for compliance with the standard. Measure the resistance of the CAN bus between the contacts (normal ~60 Ohm). For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1617?

Yes, but get it checked soon

How much does it cost to fix C1617?

The estimated repair cost for C1617 is $33–333. Actual cost depends on your vehicle, location, and labor rates.

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