The lambda probe compares the oxygen content of the air with the residual oxygen in the exhaust gas and supplies a voltage signal to the control unit. |
There is only one lamda control but it uses two lamda probes whereby the second one is for the so-called “trim control” and serves for diagnostic purposes. |
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| Self-study programme 46 |
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| SSP 39 - Euro-On-Board-Diagnosis |
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