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Home / DTC / C1654 — CAN time-out Cluster for AVH (Check Cluster) | CAN Time-out Cluster for EPB

C1654 — CAN time-out Cluster for AVH (Check Cluster) | CAN Time-out Cluster for EPB

Detailed page for trouble code C1654.

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C1654

HYUNDAI C — Chassis

CAN time-out Cluster for AVH (Check Cluster) | CAN Time-out Cluster for EPB

Brand: HYUNDAI
Type: C — Chassis
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Page language: EN

Causes

  • Open or short in CAN high/low wiring between cluster and AVH/EPB module
  • Loose, corroded or damaged connector(s) at cluster or AVH/EPB module
  • Failed AVH or EPB control module (no transmit)
  • Failed instrument cluster CAN transceiver or electronics
  • CAN bus short to battery or ground, or missing/incorrect termination
  • Blown fuse or loss of power/ground to one of the modules

Symptoms

  • AVH and/or EPB warning message or lamp on instrument cluster
  • Loss or intermittent operation of AVH/EPB functions
  • Cluster displays communication fault or warning text
  • Related U0xxx communication trouble codes present in other modules
  • Possible other network symptoms (multiple modules not responding)

What to check

  • Use scan tool to read C1654 and any companion codes from cluster, AVH/EPB and other modules
  • Verify battery voltage is within specification and key-on electrical supply to modules
  • Visually inspect CAN connectors and harnesses at cluster and AVH/EPB for corrosion, bent pins, or damage
  • Check fuses and module ground connections for security and corrosion
  • Confirm other modules respond on the same CAN bus (identify whether whole bus is down or only node)
  • Perform wiggle test on wiring while watching live data or module presence

Signal parameters

  • Idle (recessive) CANH ~2.5V, CANL ~2.5V (measured to battery negative) — small tolerances expected
  • Dominant state: CANH rises and CANL falls producing a differential ~1.5–3.0V
  • Termination resistance (two 120Ω in parallel) ~60Ω across CANH-CANL at key-off/key-on
  • Expected periodic messages from AVH/EPB are typically frequent (tens to hundreds of ms intervals) — loss of those periodic frames triggers a timeout

Diagnostic algorithm

  1. Confirm customer complaint and note when DTC set (conditions, freeze frame).
  2. Connect a capable diagnostic scan tool to read cluster, AVH, EPB and other network modules. Record which modules respond and any related U-codes.
  3. Verify battery voltage and check fuses/power feeds for cluster and AVH/EPB. Repair any power/ground problems.
  4. Visually inspect connectors and wiring at the cluster and AVH/EPB for damage, corrosion or loose pins; repair as needed.
  5. With key on, measure CANH/CANL at the instrument cluster connector: verify recessive voltages and check for dominant pulses with an oscilloscope or scope-capable scan tool.
  6. Measure termination resistance across CANH-CANL (~60Ω). If open or incorrect, locate and repair missing/incorrect termination.
  7. If bus voltages and terminations are normal, probe at the AVH/EPB module connector to determine if the module is transmitting; look for message activity or absence thereof.
  8. If one node is not transmitting and wiring checks good, swap or bench-test the suspect module (AVH/EPB or cluster) with a known-good unit or follow manufacturer module test procedures.
  9. Repair wiring/connector faults or replace defective module(s). Clear codes and verify communication is restored and DTC does not return after road test and module wake cycles.
  10. If symptoms persist, check for software updates or reprogram modules per manufacturer service information.

Likely causes

  • Disconnected/damaged harness or poor pin contact at cluster or EPB/AVH connector
  • Module power or ground fault preventing AVH/EPB from sending CAN frames
  • Damaged CAN bus (short to battery/ground or to other signal)
  • Failed cluster CAN transceiver (cluster cannot see incoming messages)
  • Missing CAN termination resistor or incorrect network topology after repairs

Fault status

⚠️ Status
CAN Time-out — instrument cluster did not receive expected AVH/EPB CAN messages within timeout period.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0 - 3.0 hours

Similar codes

U0073 U0100 U0115 C1234 C1651
371

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