overdrive solenoid and ODB codes
Just had to take our daughter’s ’02 in for transmission repair. She was driving at expressway speed and had the transmission drop out of overdrive, revs went to 3000 and it locked in “Limp Home Mode”. Check engine light came on. She got off the x-way and called me, and followed my instruction to turn it all the way off, wait a minute and turn it back on. Worked – overdrive returned, LHM went away and she finished her errand and came back home.
I downloaded the OBD codes and cleared them.
P0700 is a generic “check engine light” code that will come on with any other warning.
P1776 is a specific Chrysler code for an overdrive solenoid locked in “low reverse position” which means overdrive shut off and locked in the “deceleration” position.
There was also a “phantom code” for Chrysler products only I had to look up on the Internet: P0871, which is a code for low transmission oil pressure at the valve body, and that makes sense if the solenoid is stuck.
She told me later, her gas mileage had dropped to about 14 mpg the last couple weeks. I suspect it is connected to not having a functional overdrive. The warnings came back in a day but she was driving at city speeds and the overdrive wasn’t important.
This is maybe a repair I could have done myself but the solenoids for these are found only in transmission shops or fast-disappearing Chrysler garages. Also, at 87K miles I figured it’s likely due for transmission service anyway. (Car is new to our family and we have no service history.) I also had a niggling of fear that I’d drop the tranny pan and a bucket full of broken parts and pieces would rain out and THAT I wouldn’t be able to handle, and the car would have to be towed somewhere.
The shop I went to is a local family owned tranny shop with a great history and is NOT a national chain. I would not take an enemy’s car to a chain transmission shop as ALL of them are crooks at felony level and their work is never satisfactory and always over-priced. Chrysler shops, IF you can find one now post-obama, will cost even more and I can’t recall a single transaction with a Chrysler garage where I found they ever employed even a single competent mechanic. (I’ll accept no argument nor will I apologize for these evaluations!)
Got it back next day and it is perfect with all the rest of the service done and the linkage adjusted. Repair cost an honest US $275 and should. Not the “$400-to-start” at the chain shops. Car was a spare car of and gift from my mother-in-law to our daughter so I couldn’t argue. She got even with me for something!