This code indicates a problem with the transmission clutch position switch. The clutch position switch is a sensor that tells the transmission control module (TCM) when the clutch is engaged or disengaged. If the TCM does not receive a signal from the clutch position switch, it will not be able to shift the transmission properly.
* Symptoms of a P1784 code include:
* The transmission may shift erratically or not at all.
* The engine may stall when the clutch is engaged.
* The check engine light may be illuminated.
* Causes of a P1784 code include:
* A faulty clutch position switch
* A damaged wire or connector
* A problem with the TCM
Diagnosing and Repairing a P1784 Code
To diagnose a P1784 code, a technician will need to connect a scan tool to the vehicle's computer. This will allow the technician to see if the TCM is receiving a signal from the clutch position switch. If the TCM is not receiving a signal, the technician will need to test the switch and the wiring to determine the source of the problem.
Once the source of the problem has been identified, the technician will need to repair it. This may involve replacing the clutch position switch, repairing a damaged wire or connector, or reprogramming the TCM.
