MoTeC’s LTCD (Lambda to CAN Dual) modules monitor, control and diagnose Bosch LSU 4.9 Lambda sensors, transmitting readings on a CAN bus. When multiple LTCDs are used, up to 32 Lambda sensors can be configured on a single CAN bus, allowing an ECU or logging device to simultaneously monitor numerous Lambda sensors.


  • Provides accurate Lambda measurement, even when exhaust gas temperature is changing rapidly (heating or cooling).
  • Calibrated by the user for a particular sensor using either the initial sensor factory calibration or the free air calibration.
  • Pre-configured to suit a single unit installation. If necessary, the configuration can be adjusted; see the Configuration section for more details.
  • Units marked with a 2 or higher under the barcode are able to transmit extended Lambda values (Rich Lambda).


  • 1 x Bosch LSU 4.9 Lambda sensor
  • Power supply voltage 11 V – 16 V
  • Power supply current 110 mA typical plus the sensor heater current (heater current is typically 0.5 A – 1 A and up to 2 A on startup)
  • 1 x CAN at 1 Mbit/sec
  • Connectors
  • 1 x 4 pin male DTM connector (power/CAN)
  • 2 x mating connector for Bosch LSU 4.9 sensor
  • Dimensions 38 x 26 x 23.5 mm excluding wiring looms and connectors
  • Weight 100 grams
  • Maximum ambient temperature 100 °C
Brand MoTeC