Solenoid Switch Valve Stuck In Low Reverse

Transmission won t shift gears.

Solenoid switch valve stuck in low reverse. The solenoid plungers are constantly bathed in fluid from the transmission and metal salt from the manufacturing process and normal wear as well as detritus from the friction materials can collect on the plungers and cause them to bind in their bores and fail to function properly. In reality these judgments usually are the result of faulty diagnosis not faulty valves. As a result the transmission may not shift gears or it may get stuck in neutral. If the reversing valve is in the wrong position they assume it is faulty.

Identify these failures by the symptoms they produce. A faulty shift solenoid can prevent fluid pressure from activating the appropriate gear. Clean the solenoid with compressed air while cycling it. This dtc can also be set by the solenoid switch valve intermittently sticking in it s bore under extreme temperature conditions or a worn solenoid switch valve or plugs.

Valve doesn t reverse they assume it is faulty. If the solenoid still does not operate correctly remove the solenoid and inspect the ports for contamination or debris. One cause of shift solenoid malfunction is if the solenoid itself becomes stuck though a plugged valve can also result in various issues. You hadn t given any vehicle information yet but if you have an lh body style car lhs concorde intrepid 300m the problem may be the solenoid pack on.

Cycle the valve to release any contamiation or debris that may have been stuck in the valve. Transmission code p1776 solenoid switch switch valve latched in low reverse position most of the time it is either a solenoid switch valve stuck internal trans part internal trans failure requiring overhaul or pcm failure. With the drbiiit check the eatx dtc event data to help identify the conditions in which the dtc was set. The most likely is the valve body.

There are a couple things that can cause that. Electrical problems can also cause a shift solenoid malfunction since these components require battery voltage to operate. As all these possibilities are expensive have the proper testing done. Nine times out of ten these conditions can be traced to electrical or low on charge problems.

That code means that the solenoid switch valve was latched in the low reverse position in the valve body.