How to fix code p1698

the fuse box under the dash is also a body control module a computer have it checked

Thanks for choosing FixYa and welcome. The code, as you already know, is the #3 misfire. You may have an issue with the idle control sensor or map sensor. Did you change the wires also?

Could be a bad battery connection. Your fuel system may be going bad. Might have a faulty coolant temperature or intake air temp sensor. Could even be a MAP sensor. Is your check engine light on?

egr is at the rear of the engine. The light isnt going to go out until the problem is fixed. I would check the egr solenoid first. A scanne,r wiring diagram, and tools are needed to dignose this properly.

The 1698 code means either that there is no digital data communication from the the transmission controller OR from the body controller that is being received at the powertrain control module. An analyzer that read "hex" codes would distinguish which, the former being a 60 the latter a 61 hex code.

bad 02 sensors. you need to have your car scanned. auto zone will scan it for free. tell you the code. sell you the part needed to fix it.

Sounds like a charging system issue. Just because the alternator itself tested fine doesn't mean it's getting power to the car and battery. Charge the battery and start the car (with everything connected normally, including alternator). While car is idling, disconnect the battery (negative post wI'll do). If car dies, there's a problem with the alternator wiring/harness. Once the vehicle is running, the alternator should provide plenty of power. Check voltage at battery (from alternator) and should be around 14V. Check alternator fuse.
Could be the voltage regulator in the alternator going out, which would need a new alternator.

CODE -1698 IS NO COMMUNICATION W/TRANSMISSION CONTROL MODULE.NORMALY IT IS AN INTENAL TCM PROBLEM

this is the diagnostic procedure for your problem. (this is actually from a 3.0L engine but the procedure is exactly the same for the 2.5L)

click for full size

Have it checked. Have the codes scanned. It could be anything. If it's running good then it could just need services. Either way, have the codes scanned.