chickeneatman Posted October 10, 2020 Report Share Posted October 10, 2020 My lambda reading is stuck at 0. I have double-checked the wiring and it is good. Maybe I am missing a setting in my tune? I don't see any error codes for the AFR either. PC Datalog - 2020-10-10 11;13;53 am.llgx blur2 - 20201006.pclx Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 10, 2020 Report Share Posted October 10, 2020 Your log shows "R Comp invalid". This means the ecu isnt seeing the correct calibration resistance at the sensor. Can you try this same test that I have suggested at the end of this post: Quote Link to comment Share on other sites More sharing options...
chickeneatman Posted October 10, 2020 Author Report Share Posted October 10, 2020 Yup, that must be the issue. Reading 317.1 ohm. Where would I see the lambda error? I do have a spare that I haven't used yet. It came out to 116 ohm. Should I throw that one in and see if it works? Quote Link to comment Share on other sites More sharing options...
chickeneatman Posted October 10, 2020 Author Report Share Posted October 10, 2020 Okay I found where I can view the error status. Quote Link to comment Share on other sites More sharing options...
chickeneatman Posted October 10, 2020 Author Report Share Posted October 10, 2020 Okay now I am getting error code 16. Temp never got past 106f - 41c. I moved the sensor to my bank2 exhaust manifold and had the same result... Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 11, 2020 Report Share Posted October 11, 2020 So are you saying there is no longer error 36, but you have 16 instead? Typically error 16 is lack of adequate current on the 12V wire. Maybe try a new temporary 12V wire to see if that changes anything. Quote Link to comment Share on other sites More sharing options...
chickeneatman Posted October 11, 2020 Author Report Share Posted October 11, 2020 Yup, so I had purchased 2 afr sensors. I replaced the one that had the Rcomp error with my spare. The spare is now reporting error 16. Do you have an idea of how much current that's required? I have the 12v sourced from the same switched ignition that powers the ECU. Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 11, 2020 Report Share Posted October 11, 2020 5 hours ago, chickeneatman said: Do you have an idea of how much current that's required? I believe under some conditions they can pull as much as 8A for a very short time, but typically <2A. Just try a temporary new 12V wire with a jumper lead or similar, as it would be pretty unusual to have two bad sensors unless they are fakes. Quote Link to comment Share on other sites More sharing options...
chickeneatman Posted October 12, 2020 Author Report Share Posted October 12, 2020 Wired directly to the positive on my battery still had error code 16. Interestingly the temp seemed to slowly count down...? I know it is wired correctly... They shouldn't be fakes. They came in Bosch boxes with all the Bosch part numbers printed on the boxes. Look real to me... Quote Link to comment Share on other sites More sharing options...
Ducie54 Posted October 13, 2020 Report Share Posted October 13, 2020 Where did u buy the sensor's from? If they were cheap would most likely be copies. Quote Link to comment Share on other sites More sharing options...
chickeneatman Posted October 13, 2020 Author Report Share Posted October 13, 2020 Purchased on Ebay, came in OEM Bosch box. I messaged the seller and they claimed they were genuine. Quote Link to comment Share on other sites More sharing options...
Ducie54 Posted October 13, 2020 Report Share Posted October 13, 2020 Try putting the codes in this checker https://protect.bosch.com// Not sure how accurate that site is as mine is not coming up and it was bought from a link dealer. This is the 7th i have bought for various projects and not had an issue with any. Quote Link to comment Share on other sites More sharing options...
Ducie54 Posted October 13, 2020 Report Share Posted October 13, 2020 Got mine to work as had issues reading the number. If you use your phone on the QR code and copy text to text use the last 18 numbers. Mine passed Quote Link to comment Share on other sites More sharing options...
chickeneatman Posted October 13, 2020 Author Report Share Posted October 13, 2020 My boxes don't have a QR code, and the more I compare them to the o2 sensors on the Bosch website the more differences I spot... Like the insulation on the sensor wires is a silicon fiberglass type, whereas the Bosch units look to have a more plastic sheathing. I just ordered one verified to be a Bosch unit from a local parts store. I will be able to try that in a few days. Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 13, 2020 Report Share Posted October 13, 2020 What is the part number on the current Bosch sensors that arent working? Quote Link to comment Share on other sites More sharing options...
chickeneatman Posted October 14, 2020 Author Report Share Posted October 14, 2020 0258017025 They are 17025 o2 sensors which should be the Bosch LSU 4.9. Quote Link to comment Share on other sites More sharing options...
chickeneatman Posted October 14, 2020 Author Report Share Posted October 14, 2020 Genuine Bosch sensor acquired and tested. That was the issue. Thank you all! I honestly had no idea that counterfeit O2 sensors were a potential issue. Quote Link to comment Share on other sites More sharing options...
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