Display Group 010

DISPLAY OVERVIEW

VAG 1551 Display Overview, Display Group 010:

Note: The sum of O2S control and O2S learning value shows the total influence of the O2S control. Differences between banks can be directly evaluated by comparison of display field 1 to display field 2.

TEST TABLE

Test Table, Display Fields 1 Or 2:

Test Table, Display Fields 3 Or 4:

Notes on display field 4:
^ The display must at times drop below 0.3 volts and exceed 0.6 volts. Display values below 0.40 volts indicate a lean condition; greater than 0.40 volts indicates a rich condition.
^ Probe voltage in mV.

Graph: Air/Fuel Ratio To Voltage:

A: Heated Oxygen Sensor (HO2S) voltage (mV) high, Rich mixture (excess fuel or lack of air) High CO value.
B: Heated Oxygen Sensor (HO2S) voltage (mV) low, Lean mixture (lack of fuel or excess air) Low CO value.