Diagnosis Description
WARNING: This page is about a different car, the 2008 Infiniti M45 and 2008 Infiniti M35. However, it is still accessible from the selected car via links, so may be relevant.
B2555 stop lamp system monitors the open circuit before the stop lamp switch (models without ICC system), which detects the brake pedal operation input to the Intelligent Key unit, or ICC brake relay (models with ICC system). If it detects the open circuit, it judges that it is the malfunction and displays the DTC (Diagnostic Trouble Code)