P0784 Citroen 4-5 Shift Malfunction
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
– Dirty transmission fluid
– Faulty shifting solenoid valve
– Shifting solenoid valve harness is open or shorted
– Shifting solenoid valve circuit poor electrical connection
What about the obd code?
The P0784 Citroen code is detected when actual gear position and the commanded gear position are different
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
– Transmission may not shift to the next gear
– Transmission may not shift to the next gear
P0784 Citroen Description
This P0784 Citroen code indicates that the 4-5 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.
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