AEM Electronics Replacement Sensor - Bosch LSU 4.9

This AEM Bosch 4.9 LSU replacement sensor is compatible *only* with the AEM Digital Wideband Controller, part number 30-4110.

No, this sensor is laboratory calibrated and accurate to 0.1. It requires no free-air calibration when used with the compatible AEM Digital Wideband Controller (30-4110).

No, this sensor is specifically designed and calibrated for use with the AEM Digital Wideband Controller, part number 30-4110. Using it with other controllers will result in inaccurate readings.

Modifying the laser-etched calibrated resistor on the connector body will invalidate the sensor's input and its accuracy.

Symptoms may include erratic air/fuel readings, failure to calibrate (if applicable to your system), or if the sensor has reached its typical service life (usually indicated by the controller or manufacturer's recommendation).

This is an AEM Electronics replacement sensor that utilizes the Bosch LSU 4.9 technology, designed to meet the performance requirements for AEM's compatible controllers.

Verify the sensor is correctly plugged into the AEM 30-4110 controller. Check for any damage to the sensor's wiring harness. Ensure the sensor is properly installed in the exhaust bung and that the controller is powered on.

Confirm that the sensor is compatible *only* with the AEM 30-4110 controller. Ensure the calibrated resistor on the connector has not been altered. Check for exhaust leaks near the sensor bung, which can affect readings.

Refer to the AEM Digital Wideband Controller (30-4110) manual for specific error code meanings. This may indicate a faulty sensor, connection issue, or internal controller problem.