Read the diagnostic status for readiness

Read off the status of the diagnostic functions.

Select the appropriate remedy depending on this status: 

1. Readiness for probe diagnostics, diagnostics for heated oxygen sensor (HO2S) preheating three-way catalytic converter (TWC) diagnostics "NOT READY".

   Refer to Carry out TRIP 

2. Readiness for leak diagnostics "NOT READY".

   Refer to Quick test of the fuel tank system 

HINT: The diagnostic for evaporative emission control is included in readiness for leak diagnostics. 

Fig 1: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

Courtesy of VOLVO CARS OF NORTH AMERICA.