mattj Posted August 5, 2021 Report Share Posted August 5, 2021 I'm getting all kinds of funky errors with the internal lambda controller, using my AEM Bosch LSU 4.9 wideband O2 sensor. I know there are a variety of sensors from Bosch (different LSU 4.9's even). Mine has 5 wires. The green wire is actually missing, but the connector still has 6 active pins. The 6th pin (green) appears to be activated by a resistor inside the connector? Does the Link require a specific sensor? Quote Link to comment Share on other sites More sharing options...
Vaughan Posted August 5, 2021 Report Share Posted August 5, 2021 The 6th pin is the calibration resistor and is the reason why LSU4.9 sensor don't need to be calibrated in free air like LSU4.2 sensors had to be. Quote Link to comment Share on other sites More sharing options...
mattj Posted August 5, 2021 Author Report Share Posted August 5, 2021 Got it! Thanks. I think my sensor my be bad. I ordered another one. I'll see how that helps tomorrow. Quote Link to comment Share on other sites More sharing options...
Vaughan Posted August 5, 2021 Report Share Posted August 5, 2021 10 minutes ago, mattj said: I think my sensor my be bad See my comment on your other post, you cannot wire a wideband sensor to two controllers. Quote Link to comment Share on other sites More sharing options...
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