Display Group 010

VAG 1551 Display, Measuring Value Block Display Group 010:

Key to VAG 1551 Display, Measuring Value Block 10

NOTE:
The sum of O2S control and O2S learning value shows the total influence of the O2S control. Bank differences can be directly evaluated by comparison of display field 1 to display field 2.

Display Group 010, Display Field 1 - 4:

Diagnostic chart, display fields 1/2 - 3/4

Display Group 010, Display Field 3/4:

Diagnostic chart, display field 3/4

NOTE on display field 4:
- The display value must at times drop below 0.3 volts and exceed 0.6 volts. Display less than 0.45 volts indicates (lean), greater than 0.45 volts (rich).

Oxygen Sensor Voltage/Air Fuel Ratio Graph:

- Vertical scale: HO2S probe signal voltage in mV
- Horizontal scale: Air ratio.

A Oxygen sensor voltage (mV) high Rich mixture (excess fuel or lack of air) High CO value
B Oxygen sensor (mV) low Lean mixture (lack of fuel or excess air) Low CO value