Error Code 4-2

[Shahee1]

Anyone get a error code 2 - 1??? I am getting that error and is unable to start my car ... after looking up the code I find that it is a ignition signal error. I am unsure how to trouble shoot the issue. I do notice that I am not getting spark in cylinders 2 - 6 ... Need Help ASAP!!! Also error code 3 - 4 detonation sensor and 4 - 2 fuel temp sensor.
Modified by Shahee1 at 4:42 PM 2/8/2007

[mark1212]

ouch that sounds like 3 totally different problem but doesnt sound too serious just a lil work. here's what you should do for each code and the website with a lot of good 'how to' stuff belowhttp://zhome.com/ZCMnL/90HowTo.htm

21 - ignition signal circuit, the ECU is not detecting ignition signal from the transistor ignition unit- check harness, connectors and power transistor unit.*i can almost guarantee your plugs going into the PTU power transistor unit are corroded, try cleaning them out first you might need a new ptu though*

34 - detonation sensor circuit , open or short circuit is detected- check harness, connectors and sensor.

*you can replace or bypass- big problem with Z's- read this pagehttp://zhome.com/ZCMnL/PICS/de....html and see if you can bypass it, its the easiest and mine is with no problems.*

42 - Fuel temperature sensor circuit, open or short circuit is detected- check harness, connectors and sensor.*this one i dont know too much about, good luck*

[Shahee1]

OK ... solved error codes by going through the harness and and finding discrepancies in the wiring and fixing them ... no more error codes but now i am getting no spark ... DANG ...