Home >> Infiniti >> 2015 >> QX60 Base, FWD >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> Driver Assistance System (BCI) (Diagnostic Trouble Codes (DTCS), Symptom Diagnosis And R & I) (Except Hybrid) >> DTC/Circuit Diagnosis >> DTC C1B56: Sonar Circuit >> DTC Logic >> DTC Detection Logic