Can anyone tell me what the 212 code is

 

According to Ford Fuel Injection it is "Loss of IDM input to EEC or SPOUT circuit grounded."

You will need to do some probing with a meter. I am dealing with a similar issue on my pick up right now.

You'll need to measure the resistance between the coil wires and the respective pin on your EEC connector. Is this for the '95 in your signature? If so, according to my chiltons manual, that should be pin #4. On my '91 there is a 22k ohm resistor between the coil and EEC, but it looks like the wire for yours runs from the coil through the ICM on to the EEC so I don't know what resistance values you're looking for.

The SPOUT circuit is the pink wire running from the ICM to pin #36 on the EEC connector. Check continuity between ICM and EEC connector, then test the SPOUT plug separately. The plug should be a dead short, meaning that if you touch the test leads of your meter together and it registers 0.9 ohms, then you should be reading 0.9 ohms through the SPOUT plug.

I'm sure more knowledgeable electrical guys can give you more specific advice as well.

 

DB you have had quite a time with your SPOUT signal issue. Bill and you have been tied at the hip on that one!

Assuming the OP's truck in their signature is the one in question then I would have to say there is no IDM resistor in the ignition. Ford switched to a CCD style Ignition in 1994. That eliminated the need for the 22k ohm resistor.

When did this problem start? Has the Ignition Control Module (ICM aka TFI) been recently replaced? What color is the existing ICM? Black or gray? It should be a black, CCD style, module. The most typical cause of code 212 in this vintage truck is installing the wrong ICM. A VERY common mistake.

 

Got the truck back from the mechanic. He had to replace the EGR Valve and the EGR Switch. (EGR Valve Position sensor) I had them replaced in December due to not running right... I took the truck for smog it passed in March.
The truck seemed to be starving for fuel, wouldn't idle right and it got to where the check engine light would come on while sitting at a stop sign or stop light and when you had to hard brake for any reason.
While I was standing there he ran the codes again. The 327, 334, and 212 code went away.

At least it wasn't the computer that went bad. The switch was not putting out the proper voltage. I replaced the EGR and EGR Valve Position Senor with OEM parts from Ford, not after market like I bought in December from Napa, the parts had a 1 year warranty on them. I bought them at a Napa dealer in east county (San Diego County) they jacked me around about replacing the parts.

I do a lot of business with the Napa dealer by my house. He told me to bring him the parts and he would refund my money that I paid for the parts.

So that is an update on the problem with my truck.

 

I would still check the color of the ICM.
Make sure it is BLACK in color and if not go to the NAPA and ask for a ICM for a 1995 Mustang.
The Books are wrong for the 1994-1996 F-series trucks.

 

I will look at the ICM in the morning, Yes it was replaced with a new one from Ford a couple of months ago.

Oh where is it in the wiring diagram? Or located under the hood?

 

Here is a photo of the location:


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Thank you very much.