Golf GLS L4-2.0L (AEG) (2001)
Indicated on display: (1-2 = display fields)
Read Measuring Value Block 33
->
1
2
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Observe Oxygen Sensor (O2S) control in display field 1.
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Check oxygen sensor voltage in display field 2.
Display Group 33
Notes on display field 2:
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The voltage signal "rich mixture (low level of residual oxygen)" is approx. 0.7-1.0 V.
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The voltage signal "lean mixture (high level of residual oxygen)" is approx. 0.0-0.3 V.
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When changing from "rich" to "lean" and back again (Lambda = 1.0) the voltage jump will change from 0.7-1-0 V to 0.0-0.3 V or back again.
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Due to steep voltage jumps, the oxygen sensor control cannot keep the ideal mixture composition (lambda = 1.0) constant. The control fluctuates
constantly between a "slightly too lean" and "slightly too rich" condition.
Oxygen sensor voltage U Lambda in mV