Code No. B1161 Chassis No. mismatch


caution
  • When the diagnosis code No.B1161 is set, be sure to diagnose the CAN bus line.
  • When replacing the ECU, always check that the communication circuit is normal.

DIAGNOSTIC FUNCTION



JUDGEMENT CRITERIA


Check Conditions
  • When all the following conditions are met.

  1. Power supply mode: ON
  2. Chassis number written in OSS-ECU
Judgment Criterion
  • The chassis number received via CAN communication is different from the chassis number written in OSS-ECU.

PROBABLE CAUSES



  • Malfunction of the CAN bus line
  • Writing error of chassis number to engine-ECU (engine-ECU has been interchanged between two vehicles, or chassis number has not been written after engine-ECU replacement)
  • Malfunction of OSS-ECU

DIAGNOSIS PROCEDURE


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