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Originally Posted by Jpisanutter
Hi all i have a s40 i got a auto electrian to my can as i changed front lambda sensor as it set my engine management light on bank 1 sensor 1 and the auto elec says its my ecu not sending the signal to the lambda sensor i have looked on ebay etc for a new 1 i got a pic of the numbers for the old 1 what do the numbers mean as im trying to get them as close as possible so i dont need to get it programmed again to my car
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Your auto electrician does not know how it works , The lambda sensor generates a voltage and sends it to the ECU .. What is most likely is the electric heater in the lambda sensor has failed or the fuse for it has blown … that is the first test to do .
If you do need a new sensor get the original volvo one , it is likely in my experience that a non genuine one may not work properly and get the light on again .You get what you pay for … Check the electric heater part of your lambda sensor first ..