wannabe Posted August 11, 2013 Share Posted August 11, 2013 Hi team, bridged the diag port in the Crown this weekend and ended up with a code 5 and a code 2, which from googling generic toyota codes=oxy sensor and AFM. I searched this part of the forum as well but no success finding anything. Could anyone confirm or deny this? Would love to get rid of the silly CEL in the crown. Any help would be lovely. Thanks in advance Quote Link to comment Share on other sites More sharing options...
Spencer Posted August 11, 2013 Share Posted August 11, 2013 Seems right to me. Quote Link to comment Share on other sites More sharing options...
wannabe Posted August 11, 2013 Author Share Posted August 11, 2013 Whee, I also think I found a 131 repair manual, so will post up link when I check it tonight to see if its correct. Will any 1 wire toyota oxy sensor work? Cos could scab one off the MR2. Otherwise, might see if ones off Matts 126 crown would work? Quote Link to comment Share on other sites More sharing options...
HighLUX Posted August 12, 2013 Share Posted August 12, 2013 Yeah all 1 wire oxy sensors will read the same value. A 2nd hand one will probably not fix the problem as they wear out and read the wrong value which pulls a fault code. Brand new is the best way to go Quote Link to comment Share on other sites More sharing options...
wannabe Posted August 12, 2013 Author Share Posted August 12, 2013 Ah was worried you would say that, I was hoping to keep this car cheap/nab the sensor off my wreck MR2 and solder it in.....not really fussed about proper readings as its a 1GFE, just want to get rid of the CEL/get some mileage back Quote Link to comment Share on other sites More sharing options...
HighLUX Posted August 12, 2013 Share Posted August 12, 2013 New Bosch 1 wire o2 sensors can be had on trademe for $126 which is well worth it IMO, will make fuel economy much better Quote Link to comment Share on other sites More sharing options...
wannabe Posted August 12, 2013 Author Share Posted August 12, 2013 Damn that is cheap....not sure if I should be ghetto. Or replace. Hmm Quote Link to comment Share on other sites More sharing options...
wannabe Posted September 14, 2013 Author Share Posted September 14, 2013 Hey all just an update. I replaced the two sensors with those from a working car but am still getting the cel. I'm starting to wonder if those codes aren't for afm and oxy sensor or if I have a wiring issue. Could someone confirm the codes please? Thanks in advance Quote Link to comment Share on other sites More sharing options...
HighLUX Posted September 15, 2013 Share Posted September 15, 2013 Did you clear the codes from the ECU after fitting the new sensor? Quote Link to comment Share on other sites More sharing options...
wannabe Posted September 15, 2013 Author Share Posted September 15, 2013 Yup disconnected the battery and cleared the codes every time. The CEL will clear, but as soon as I rev it/put it under any load, the CEL comes back same codes again. I'm hoping its not a wiring issue, but it most likely is. I will try and exhaust all options before trying to look at another loom...lol Quote Link to comment Share on other sites More sharing options...
Spencer Posted September 15, 2013 Share Posted September 15, 2013 Check the output of the afm and oxy sensor? There is a m/ga60 celica workshop manual online that will be relevant to this, fire the bitch up and smash a multimeter down the ecu pins. Gotta approach this kind of shit systematically not just change out parts that could be good. Quote Link to comment Share on other sites More sharing options...
wannabe Posted September 15, 2013 Author Share Posted September 15, 2013 Yeah that will be my next port of call. Was really hoping (naively) that it would be as simple as swapping the offending sensors. Will be taking to it with a multimeter this weekend. I'm gonna check out the ECU end first before I decide to remove the loom and have a squiz at trying to see if there's anything amiss there. Quote Link to comment Share on other sites More sharing options...
Spencer Posted September 15, 2013 Share Posted September 15, 2013 Find that 1ge celica service manual on the ner they have sweet logical fault chasing steps that will help you, also the ranges/outputs for the sensors will be useful. Pin outs may or may not be helpful but you should be able to work it out if you have fucked with Toyotas before. Quote Link to comment Share on other sites More sharing options...
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