2001 FORD F150 2001 F-150 TROUBLE CODE P1780

  • Tiny
  • Jackle61
  • 2001 FORD F-150

Transmission problem
2001 Ford F150 V8 Automatic 162000 miles

I scanned my truck and got a P1780 code; "transmission control switch (O/D cancel) circuit out of self test range". I can't find what they are calling the "control switch", do they mean the control solenoid?

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have the same problem?
Wednesday, March 24th, 2010 AT 7:59 PM

1 Reply

  • Tiny
  • 19,545 POSTS

OD switch on the shifter

KOER DTC P1780: Check Transmission Control Switch Function

This DTC indicates Transmission Control Switch (TCS) was not cycled during KOER self-test. Possible causes are:
Faulty TCS
TCS Not Cycled During Self-Test
TCS Circuit Open Or Shorted
Faulty PCM
Turn ignition switch to ON position. Using scan tool, select TCS PID from PID/DATA MONITOR & RECORD menu. Cycle TCS switch. Then hold switch depressed for 3 seconds, then release switch. If TCS PID value switched from ON to OFF, then indicated ON when switch was depressed, repeat KOER ON-DEMAND SELF-TEST ensuring to cycle TCS.


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Wednesday, March 24th, 2010 AT 8:43 PM

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