Just installed my innovative db wideband with lm-1 last night. Did everything by the manual, calibrated it in open air for 30 seconds, installed it in the downpipe and now the small led is blinking 4 times and its stuck reading 7.4. Do I need to calibrate it again? Help please

 

be sure all the grounds are hooked up at the same point

 

Got it figured out. I dont know what the deal was the first time but the sensor just has to warm up is all. Works great now. What color is your car??

 

Had the same sensor installed in my car. It would work well for a couple months but then it would need to be re-calibrated. Got to be a PITA crawling under the car all the time to re-set it. Hopefully yours is more reliable than mine. Good luck!