Got my intake gaskets replaced today, and go to read codes again,all clear.
Performed a KOER test and got a P1780 code(Trans ctrl sw out of range).
Any ideas out there?
Thanx

 

<table width="100%" border="0" cellpadding="0" cellspacing="0"><tbody><tr><td></td><td>P1780</td><td></td><td width="100%">Transmission Control Switch Out of Self-Test Range</td><td></td><td></td></tr><tr><td colspan="6"></td></tr><tr><td></td><td colspan="4"></td><td></td></tr></tbody></table><table width="100%" border="0" cellpadding="0" cellspacing="0"><tbody><tr><td></td><td></td><td width="50%" align="left">Possible Causes</td><td></td><td width="50%" align="left">Setting Conditions</td><td></td><td></td></tr><tr><td></td><td></td><td valign="top" align="left">

• TCS is damaged
• TCS circuit open or shorted in the wiring harness
• TCS not cycled during the self-test
• PCM has failed

</td><td></td><td valign="top" align="left">KOER Self-Test Enabled Engine started, and the PCM detected the Transmission Control Switch (TCS) was out of range during the self-test.
This code sets in 1 Trip(s).</td></tr></tbody></table>

 

Thank you JK, looks like I got more work in front of me.

 

I would just replace the switch, they are known for problems.

I cant remember the KOER test, I havent done it in a while, you might want to try it running in neutral.

 

Thanx again jk.Swich fixed problem.
Hope this helps others reading this thread.