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Home >> Infiniti >> 2012 >> G37 IPL, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 37 (Security Control System (Sedan)) >> DTC/Circuit Diagnosis >> DTC B2557: Vehicle Speed >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

WARNING: This page is about a different variant/trim than selected.
NOTE:
  • If DTC B2557 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to "BCM: DTC LOGIC ".
  • If DTC B2557 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to "BCM: DTC LOGIC ".
DTC No. Self-diagnosis name DTC detecting condition Possible causes
B2557 VEHICLE SPEED BCM detects the following difference between the vehicle speed signal from "unified meter and A/C amp." and the one from "ABS actuator and electric unit" for 10 seconds continuously.
  • One is 10 km/h (6.2 MPH) or more and the other is 4 km/h (2.5 MPH) or less
  • Wheel sensor
  • Unified meter and A/C amp.
  • ABS actuator and electric unit (control unit)