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Home / DTC / C167286 — SAS Message Counter Error

C167286 — SAS Message Counter Error

Detailed page for trouble code C167286.

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C167286

HYUNDAI C — Chassis

SAS Message Counter Error

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

Causes

  • Corrupted or out-of-sequence message counter in SAS transmissions
  • Intermittent or failed CAN/LIN bus communication between SAS and other modules
  • Faulty SAS module or its internal firmware
  • Damaged wiring, poor connector contacts, or grounding issues
  • Recent module replacement or software/coding mismatch

Symptoms

  • Steering/ESC/ABS warning lights illuminated
  • Vehicle stability control/traction control may be disabled or operate unpredictably
  • Steering angle value missing or not updating in live data
  • Inability to perform or complete SAS/steering angle calibration
  • Intermittent loss of related driver assistance functions (e.g., lane keep, torque assist)

What to check

  • Read all related DTCs from SAS, ABS/ESC, BCM and gateway modules; record freeze frame/live data
  • Check battery voltage and charging system for stable supply
  • Inspect SAS connector, wiring harness and nearby grounds for damage, corrosion, or loose pins
  • Use a diagnostic scan tool to monitor SAS message, counter, and checksum in live data
  • Perform CAN/LIN bus health check: measure bus voltages, check termination resistors (~60 ohm across CAN_H/CAN_L), and scan for error frames
  • Check for recent module replacements or software updates and verify calibration/coding status

Signal parameters

  • Message Counter: typically small-bit counter (e.g., 4-bit) incrementing each message — should follow expected sequence
  • Message Interval: regular periodic SAS message (typical range 10–100 ms depending on vehicle model)
  • Checksum/CRC: present on some SAS messages to verify data integrity
  • CAN Bus voltages: idle approximately 2.5 V common-mode; dominant/recessive behavior on CAN_H/CAN_L
  • Error Frames / Bus Off: increased error frames or bus-off state indicates communication problems

Diagnostic algorithm

  1. Record DTC(s) and freeze frame; note which modules report the SAS counter error.
  2. Clear codes and attempt to reproduce. If the code returns, proceed with live-data logging of the SAS message (angle, counter, checksum) while operating the steering.
  3. Monitor the message counter sequence. If counter stalls, repeats, or jumps unexpectedly, the sending module or bus integrity is suspect.
  4. Inspect SAS connector and harness for corrosion, bent pins, water ingress or damage. Repair or replace as needed.
  5. Check battery/charging and main power/ground to the SAS and gateway/ABS modules. Fix any supply problems.
  6. Use oscilloscope or quality CAN/LIN bus analyzer to inspect message timing, voltage levels, error frames and termination. Repair wiring, shielding, or termination faults.
  7. If wiring and bus are good, check for software/firmware mismatches: verify part numbers, calibration status and programming history. Reflash/update modules per OEM procedure if indicated.
  8. If a module is suspected faulty (SAS or receiving module), swap with known-good unit or bench-test component where possible per service manual. Replace only after confirming via diagnostic data.
  9. After repairs, perform SAS/steering angle sensor calibration and erase codes. Road test to confirm no reoccurrence of the message counter error.
  10. If intermittent or difficult to reproduce, perform extended logging and inspect for environmental or mechanical triggers (moisture, vibration, temperature).

Likely causes

  • Steering angle sensor module generating incorrect counter or checksum (module fault or firmware bug)
  • Intermittent wiring/connectors at SAS, ABS/ESC module, or gateway (corrosion, bent pins, loose terminal)
  • CAN bus fault: high error rate, bus-off, or missing termination
  • Control module being unable to decode message due to software version mismatch or incorrect coding
  • Low battery/unstable supply causing corrupted message transmission

Fault status

⚠️ Status
SAS message counter invalid or out of sequence — integrity/communication error detected on steering angle sensor message.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours

Similar codes

U0073 U0100 U0121 C1624 C1651
371

Browse 371 HYUNDAI manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

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