Adaptive Lambda Control System

Compared to its predecessor, the M1.1 Motronic has an adaptive system with extended regulating and operating range to adjust the air/fuel mixture according to the feedback of the oxygen sensor, which includes the operation and regulation of the purge valve from the evaporative system. Altitude influences as well as air leaks are also compensated. Fixed programmed values are compared with actual ones.

In case of deviation of the fixed values, the system automatically corrects and stores the new values in its memory. There is a constant renewal of the correction factor. The memory can be cleared for troubleshooting purposes by disconnecting the power supply. If the memory is interrupted, new adaptation takes place in a few minutes of engine running time.

Malfunctions of the Lambda Control System that could cause the engine to exceed exhaust emission standards are recognized and stored in the diagnosis memory. The "CHECK ENGINE" light then will be illuminated and the 2-flash code will be displayed with ignition key in position 2.

Important:
If there is a malfunction indicated in the Lambda Control System, there can be different reasons that are not necessarily related to a defective oxygen sensor. Follow troubleshooting procedures thoroughly.