Just picked my '98 VW Cabrio 2 weeks ago. She is not shifting like she's supposed to. Here are the codes: P0748 - Pressure Control Solenoid A Electrical P0753 - Shift Solenoid A Electrical P0758 - Shift Solenoid B Electrical P0763 - Shift Solenoid C Electrical P0768 - Shift Solenoid D Electrical P0773 - Shift Solenoid E Electrical P1778 - Solenoid EV7 Electrical Malfunction Should I just replace the solenoid, or is it more complicated than that? FYI - I'm trying to do work myself armed with a Chiltons and socket wrench. Not terribly experienced.
Basically all of the codes refer to the solenoid
check all wiring and connections for corrosion, check the condition of the oil as it may be well overdue for a change
remember that solenoids get the power from the transmission control module(TCM), the Transmission ratio(TR) sensor m) and the VSS ( vehicle speed sensor )
all of these play a part in making the solenoid work at h right time
I would suggest that you spend time discussing the problem and the codes with a professional transmission repair shop just to expand on the manuals limited information
SOURCE: jeep codes location of unit
Got me a complete manual for 199 jeep factory model and found location of each individual unit in question. Manual gives u possible solution to each code and repair and or replace. As a mechanic myself testing, trouble shooting and repair was not that difficult. Shift solenoid was very difficult to get to. Located under the head lamp passenger side.
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