P0781 JEEP – 1-2 Shift Malfunction

 

P0781: DIY Repairing Video Tutorial

https://youtu.be/Cq-oDbmKiSk

Check out nonda Auto DIY Center for more engine error code repairing videos.
https://www.youtube.com/playlist?list=PL-Lyko0O0oxHe1AGvzwAz-wokJPXAtW97

 

P0781 JEEP Possible Symptoms

  Engine Light ON (or Service Engine Soon Warning Light),Transmission may not shift to the next gear.  

P0781 JEEP Possible Causes

  Low transmission fluid level,Dirty transmission fluid,Faulty shifting solenoid valve,Shifting solenoid valve harness is open or shorted,Shifting solenoid valve circuit poor electrical connection  

P0781 JEEP Description

  This P0781 code indicates that the 1-2 shift valve in the valve body is locked in the direction of the spring compression. The Transmission Control Module (TCM) controls the gearshifts by turning the shift solenoid valves ON/OFF and switching oil pressure to the valves in the valve body. The TCM calculates the actual transmission gear by comparing the signals from the input speed sensor and the output speed sensor.