Guest geth792 Posted November 16, 2013 Share Posted November 16, 2013 Need help on error code 42!! Been told it could be a speed sensor which is £200!!! Plus the supra is idling terrible and missing loads could this be because of code 42????? Help Link to comment Share on other sites More sharing options...
Homer Posted November 16, 2013 Share Posted November 16, 2013 42 is indeed the speed sensor circuit system warning. I'd first have a look at the wiring to the speed sensor and also in the ECU footwell area to make sure there's no break in it. The wire is often tapped into for the speedo reading and other things such as a de-limiter so a faulty connection is highly likely. I very much doubt it's the sensor itself, I've never heard of one failing. Edit, oh and click the link "error code", I think the 3rd or 4th attachment shows the possible areas to look at. Link to comment Share on other sites More sharing options...
Guest geth792 Posted November 16, 2013 Share Posted November 16, 2013 Could this code make the supra misfire??? Link to comment Share on other sites More sharing options...
Homer Posted November 16, 2013 Share Posted November 16, 2013 Possibly. Do you have a speed delimiter fitted? Link to comment Share on other sites More sharing options...
Guest geth792 Posted November 16, 2013 Share Posted November 16, 2013 Yes I do have a delimiter on it could that be the problem??? Link to comment Share on other sites More sharing options...
Homer Posted November 16, 2013 Share Posted November 16, 2013 Yes, it might be as the de-limiter taps the speed sensor wire. Have a look at your connections to it down next to the ECU and make sure you're not seeing any broken ones. Link to comment Share on other sites More sharing options...
Guest geth792 Posted November 16, 2013 Share Posted November 16, 2013 Ok thanks I'll have a look cheers Link to comment Share on other sites More sharing options...
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