Does anybody have a 2011 Grand Caravan? Especially if it's registered in California.
Have you gone to the dealer for Customer Satisfaction Notification (Recall) V51?
It's a reprogram of your PCM for Emissions testing.

I'd really like to hear about ANYBODY who has a 2011, if you have OR have not had this update, and if your van is giving you trouble with your oxygen sensor heater circuits.

I'm suspicious, but I'd like to hear if this is happening to anyone else.

Full Story:

I bought a used 2011 GC Crew 3.6L Flex Fuel, with 127,000 miles, on November 29, 2021

Shortly after, it started throwing DTC's regarding the O2 sensors.
I'm not sure which codes came up first. I didn't think to be aware of what order, or exactly when they started. I THOUGHT it started giving me codes (lighting MIL) in January, but my app connected OBD scanner seems to say the codes were showing up as soon as December 9, 2021.

The codes it displays are P0031, P0037, P0051, and P0057
That is the "Heater Circuit Low" Code for each of the 4 Oxygen sensors.

Very odd that its stating that issue for all 4 o2 sensors at the same time.

I was driving it around for a while, but started getting worried that I was going to damage something with the Check Engine light burning at me every day.
So it sat in the driveway, while I was figuring out what to do, and I messed with fuses, and pulled the battery cable and generally tinkered and jerked around with it for about a week.
Eventually, after starting it, the MIL light started blinking and it was suddenly running very rough, so I shut it down and had AAA tow it to a shop, before I broke something.

While it was in the shop, before they had a chance to diagnose it, I found this was an apparently known fault of the 2011 GC 3.6L, Specifically an issue with the PCM "due to a software error in the power down strategy"

"Customer Satisfaction Notification L41" from February 2012:
https://static.nhtsa.gov/odi/tsbs/20...44843-7816.pdf

This is specific to the 2011 GC 3.6L (& 2011 RAM 1500 4.7L truck)
It states the PCM may decide that all the oxygen sensor heater circuits are lousy, and that throws all those codes, and screws with the o2 readings & settings and then we start getting misfires.
(Glad I found this, because the shop wanted to swap all my o2 sensors, and suggested we try to "repair" the wiring harness. With this info, a deeper dive found all o2 sensors measured good ohms, and problem was clearly with PCM)

Disappointed to find I may need a new PCM, I did more digging, and found out this vehicle went in on Nov 22, 2021 for a different widespread issue with the PCM, intended to solve a problem with permanently retaining Trouble Codes, which effects emissions tests.

"Customer Satisfaction Notification V51" from December 2019
https://static.nhtsa.gov/odi/tsbs/20...70368-9999.pdf

This one effects 2011-2015 GC, and a whole host of other Dodge, Ram, Jeep, and Chrysler vehicles as old as 2010, through 2015.
It states the PCM may not be able to erase trouble codes from permanent memory, even after repair and reset, thereby failing SMOG test. PCM to be reprogrammed

So what are the chances:
if the PCM, ONLY in 2011 GC's, was reprogrammed with L41 to prevent failing good o2 heater circuits
But then reprogrammed AGAIN with V51 which is a much wider, more generic change to software for emissions...

Is it possible that V51 for everybody CANCELLED OUT L41 for me?

Then I found this one random post (2020, Different Dodge, but hey, it's a start!):
Regarding the V51 recall : "Got the software update and within a week miss fired on valve 2 and 4 plus O2 sensor problems. Wish I never did the update"
https://www.challengertalk.com/threa...6/post-8604491

(Clearly, I'm grasping at straws so I can get out of paying for an expensive new PCM, and the wait time during a global chip shortage...)

Here's an old post (2014) from a guy who had the PCM swapped out, and it fixed the same problem for him
https://www.dodge talk.com/threads/automatic-obd-codes-at-80k-miles.467002/post-5478674

Anybody think there's a chance this information will carry weight with Dealership/manufacturer?

I need to get this car back on the road, getting me to work sites, but I hate to think it's gonna cost me another $2000 after only owning the thing for a couple months...