Transletter

Certified Transmission - Transletter ®

October 01, 2010

It's Summer

Written By - Jerry Huerter, Diagnostician


A 96 Nissan 300ZX came into the shop last summer. Remember, I said it was summer which affects this story later.  The customer stated that the check engine light was on and at times would not shift into 4th gear.  I scanned the computer, and it had a P0705 inhibitor switch code.  I cleared the code and went for a test drive with the scan tool connected; inhibitor switch data was correct and the code did not reset.  I then put the vehicle on a lift and inspected the wiring and connectors, and everything looked good.  After talking to the customer we decided to replace the inhibitor switch.  The customer picked up the car and said he would let us know if it acted up again.  Two days later the customer returned with the same complaint.  He said he would leave the car with us for a few days so we would have time to do further testing.   Again, I scanned the computer, and the code P0705 was reset.  I cleared the code and went for a test drive; the scan data was good and no code reset.  After re-inspecting the wiring harness and connectors to make sure I did not miss something, I found everything checked OK.  Then I test drove the car off and on for two days and the code never reset.  The customer came and picked up the car, and we told him if the check engine light came on again to let us know what type of driving he was doing and where he was driving.  He said OK.