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DTC Detection Logic

WARNING: This page is about a different car, the 2010 Infiniti G37. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

If DTC B2557 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to "DTC LOGIC ".
If DTC B2557 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to "DTC LOGIC ".

DTC DETECTION LOGIC CHART

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)