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View Full Version : KA24DE 4 sensor malfunction where to start


8Nismo9
03-19-2011, 09:09 PM
I have a 1996 240sx se,bought the car with no problems and iv had it for 6 months.Well I started having an idle issue,wont hold idle at start up and holds after it warms up.Also noticed a rich smell from exhaust(explains my poor gas mileage)but no check light.(the guy took the bulb out -_-) well replaced the bulb and boom CEL lights up.Scanned the car and came up with these

Knock sensor malfunction
02 sensor malfunction(bank 1 sensor 2)
Crank angle sensor malfunction
Idle air system malfunction

Im wondering if one of these sensor is tripping other ones.My question is what should i replace first and go from? I was thinking the 02.

xxoreolovexx
03-20-2011, 01:40 AM
Knock sensor. I had the same thing happen in my s14. Changed the knock and everything went away.