B0056 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B0056 – Third Row Left Seatbelt Sensor


B0056 Possible Symptoms


Air Bag Warning Light ON


B0056 Possible Causes


Faulty Third Row Left Seatbelt Sensor,Third Row Left Seatbelt Sensor harness is open or shorted,Third Row Left Seatbelt Sensor circuit poor electrical connection


B0056 Description


The Restraints Control Module (RCM) monitors all deployable device and sensor circuits for a signal cross coupled (short) between circuits. If the RCM detects a short between the circuits of one device and another device, it will store a DTC for each of the signal cross coupled faults in memory. The RCM sends a message to the Instrument Panel Cluster (IPC) to illuminate the air bag warning indicator. When a normal loop fault is present (one loop is either shorted to battery/ground, open circuit or low resistance), then signal cross coupled diagnostics will not be active. Once the normal loop fault is repaired, then the signal cross coupled diagnostics will resume.