P2122 codes

[chrism]

When the Serp belt snapped is there any way it could have damaged the back or bottom side of the ECM/TCM box and, more specifically, the connections on the bottom of the modules?

[Ftknox1301]

So now I got a new problem, I tried removing the ECM and TCM so I could inspect them to make sure that everything looked in its place and now after reinstalling them the car will not start. Getting a p0727 and p2121 code now. Car will crank but will not start.

[vtl]

P0727 is no crankshaft position sensor. Now it really looks like a wiring problem.

[chrism]

So now I got a new problem, I tried removing the ECM and TCM so I could inspect them to make sure that everything looked in its place and now after reinstalling them the car will not start. Getting a p0727 and p2121 code now. Car will crank but will not start.

Did you use the lock/unlock tool to get the pink sliders latched back into the locked position? It’s the sliders that pull the modules snuggly down into the connectors.

[RickHaleParker]

Did you clean the connector before you reinstalled the ECM and TCM?

Sometimes oxidation will prevent a good connection and produce errors that did not exist before the control units where pulled.

[SuperHerman]

Your vehicle appears to be outfitted with the MM throttle body. Known to cause all sorts of issues and subject to a recall if I recall correctly.

It looks like you have eliminated the free stuff - now it is time to focus on the throttle body. But RickHaleParker's suggestion to check all the connections and clean them is valid. These cars are getting old and a poor connection could cause your issues.

VIDA has the ability to check the throttle body operation is as do some other higher end scanners.