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CEL code 41

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    #1

    CEL code 41

    Okay so I swapped an h22 into my 93 accord and I have had a check engine light ever since. I figured out I had a bad o2 sensor, I ordered a new denso sensor online and plugged it in and now I have a CEL code 41. Which is a bad oxygen sensor heater I believe. Any ideas on how to fix it?
    Tags: cel, code 41, o2 sensor
    #2
    That's pretty much saying the o2 sensor itself is bad. Reset your ECU (the easiest way is to just disconnect the battery for a few minutes) and then fire it up again. Sometimes the old codes are still stored in there even when you fix the problem.
    Also, check to make sure all your wiring is good. If you spliced anything, make sure nothing is exposed, and the splices are making proper contact. Check for cracked sheathing or exposed wires, and make sure the connector on the sensor and the car's harness are clean.

    It's also entirely possible that your new sensor is defective. It's uncommon, but not unheard of.






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      #3
      alright thankyou deevergote I will go check those things out and come back if they don't work out!

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        #4
        Hopefully one of those things will be the problem...othewise that o2 sensor is bad!

        Another thing to try is another ECU. It's not likely that the ECU is the problem, but anything is possible. If you can borrow one from someone, or grab a cheap junkyard one, it might be worth a shot.

        If you didn't go there before, Rockauto.com has Denso o2 sensors for like $40... about as cheap as you'll find anywhere. If you need to get another one, that's your best bet.






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