I have a p0351 pending code - 1999 Ford Escort

https://www.yourmechanic.com/article/p0351-obd-ii-trouble-code-ignition-coil-a-primary-secondary-circuit-malfunction-by-spencer-clayton

Reasonable checklist on the link below...

https://www.obd-codes.com/p0351

code C1201 Refers to a fault in the ECM , and can generate the code P0351 that refers to ignition coil failure

From a reputable repair website:


P0351 - OBD-II Trouble Code

Auto Systems and Repair

Ignition Coil "A" Circuit Primary/Secondary Malfunction Our emissions expert has put together the following information about the P0351 fault code. We have also included diagnostic procedures you can take to your repair shop if the mechanic is having difficulty analyzing the code.
OBD II Fault Code

• OBD II P0351 Ignition Coil "A" Circuit Primary/Secondary Malfunction

What does this mean? The ignition coil or coils are responsible for igniting the air/fuel mixture inside the combustion chambers. Without reliable performance from the ignition coil(s) the vehicle will stumble and misfire.
Code P0351 indicates there's an electrical problem in either the primary ( the computer side ) or the secondary ( the spark plug side ) of the Ignition Coil "A" Circuit.
Symptoms

• Check Engine Light will illuminate
• Engine idles rough
• Engine misfires on acceleration
• In rare cases, the engine may not exhibit noticeable symptoms

Common Problems That Trigger the P0351 Code

• Defective Ignition Coil(s)
• Defective Spark Plug(s)
• Intake Manifold Vacuum leaks
• Carbon buildup in the Throttle Body air passages
• Defective Idle Air Control Valve or Electronic Body

Common Misdiagnosis

• Ignition coil(s) replaced when cause of the malfunction was a vacuum leak
• Spark Plugs replaced when cause of the malfunction was a vacuum leak

Ignition coil 1 that means you have a bad coil on number one cylinder

P0300 - Random multiple cylinder misfire
P0301 , 302 and 304 - Cyliners 1, 2 and 4 misfire
P0351 - Ignition coil A primary/secondary circuit malfunction
P0354 - Ignition coil D primary/secondary circuit malfunction

go to this site, it will explain the p0351 code. www.helpforcars.net/obd_codes/codesphp?codep0351 have a good day !!

The codes you mention 301-302-303 are all misfire in the respective cylinders. you should replace the coil, while you are at it also verify the condition od the sparkplugs.

p0351- ignition coil A primary or secondary fault
p0352- ,, ,,,,,, ,,,,, B ,,,,, ,,,,,,, ,,,,,,,,,,,,, ,,,,,
p0353 - ,,,,,,,,,,,,, C,,,,,,,,,,,,,, ,,,, .,,,,,,,,,,,,,,,,
you may have a problem with yuor ingnition system

you are having an issue with ignition coil. the only solution is to replace usually fairly inexspensive