Can anyone help me. I keep getting code 1003 park/neutral switch circuit. I have a 1997 Nissan pick up 4cyl with manual transmission 4 wheel drive. I have change the neutral safety switch, I by passed the switch, change the clutch pedal switch, changed the clutch relay, change the neutral switch on the transfer case and I still get a check engine light code 1003. The check engine light comes on only when I am driving on the highway and I don't have any trouble starting the truck. Thank for any help that you can give me. John
Linear Mode
