Secondary Parameters And Enable Conditions

Active check:

This diagnostic is inhibited if any of the following DTC's are present:

CRK fault

CAM fault

MAF fault

O2 sensor fault

CPS fault

ECT fault

TPS fault

FSD fault

TPS/MAF fault

MAP fault

Misfire detected

Enable Conditions:

• IGN = ON
• ECT > 75 °C
• Lambda sensor heater in controlled Open Loop (normal) operation which is active after dew point detection and an additional time interval of 25 sec.
• Closed Loop operation for lambda-controller and fuel trim correction controller

OL:

IGK "ON"

And HO2S Heater = ON

Exhaust gas temperatures at the lambda sensor downstream catalyst > 349.975 °C

Duration in which lambda probe voltage lies within voltage band to detect fault ≥ 3 s

Or

Delay time for final diagnosis activation ≥ 5 s

This diagnostic is inhibited if any of the following DTC's are present:

O2 downstream sensor faults