[PDF] LC-2 Digital Air/Fuel Ratio (Lambda) Sensor Controller Manual 1 LC-2. The LC-2 is a controller that controls a wideband O2 lambda sensor to measure O2 content in exhaust gasses. In this section we will spend a moment getting familiar with the LC-2 lambda controller. 1. Status Light – The LC-2 status light indicates the controller’s operational status.[PDF] Bosch Universal Oxygen English - VAGLinks Lay the Bosch Universal Oxygen Sensor beside the OE Sensor and cut the Bosch Universal Oxygen Sensor wiring to the length of the OE Sensor, but do not cut to less than 5" (hex/flange face to end of sensor wire). Proceed to Step 6. Cut the wiring of OE Sensor 4" from end of connector as illustrated.