help needed. lambda fault
#1
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help needed. lambda fault
Hellow lads. Iv got my 2001 jap bugeye wrx and its failling the test on lambda reading too high. There is a engine light on in the dash. Iv read the fault and its saying bank 1 sensor 1 lambda. Iv put 2 sets of sensors into my car and still no joy. Iv checked continuity back from the lambda to the ecu and its all ok. I am however getting 14volts coming to the lambda on 2 wires I think its the white wire and blue wire. Its showing fault code p0031 which is a heater fault. I was thinking could the ecu be damaged somehow to be letting 14volts go to the sensor? I was fairly sure one of them wires are soppost to be negative/ground? Any help would be great lads? Its been to a few garages before I baught it and they couldnt figure it out.
#5
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Iv disconnected the lambda and checked them 2 wires for continuity and it was giving no continuity so I took it that the wires werrent joined together or shorted
#7
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See its been to a load of garages before I baught it off a friend and they all just kept changing the lambda sensors and the light still would not go off or fault erase. Im thinking that somthing shorted in the ecu and is not giving an earth to controll the lambda and instead is giving a 14.5 out, I wonder could this be the case?
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#8
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The lambda sensor has a heater built in to it which would require the full operating voltage of the car. It should be returning a sine wave signal of up to 1 volt to the ECU on another wire. This is the lambda signal. I'd either have someone with good electronics knowledge with decent test equipment check it or else try a known good sensor.
#11
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Id say its definatly not the sensor atall because iv just fitted one whis known to be good and still no joy. The wiring is all good as iv checked. Where is this fuse located? Iv checked all inside down near drivers feet and also outside in the box near the battery. Is this the relay you are on about under the glove box, the brown one? I dont know how to check it but when I pull it out the car stops running
#14
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I just see a brown relay and some strange round relqy thing probably for fuel. I do know that one of my wires coming off the lambda is actually going to this brown relay
#17
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Ok ill have to check it when im at it again. If its one of them fuses that have a see through cover its not gone because iv looked at them and none were gone. :-(
#20
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Yep iv allready tryed that. I know because I pulled it out and the engine shut off. Would you know anybody breaking a jap wrx bug or where would I get a good ecu. Im finding it hart to get one. And I cannot post in the wanted section of this id say its because im new on this or somthing
#21
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Can you have a look at the ECU and get the code from it? eBay is usually coming down with them. Plus the for sale section has loads if bugs being broken. Have a look in there and message the guys breaking them.
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