I have an obd1 code reader and pulled some codes' (522' 10 ' 111 koeo).
and 538 with it runnig' i lost my book for my obd 1 and was wondering if anyone can give me a link to find all these codes ' if not can someone tell me what these codes mean . that would mean the world to me ' im in the process of tuning her up for the winter.

Thank you.

 

You more than likely left the A/C switch on when you ran the test.
Make sure the A/C system is off when you run the KOEO voltage self test.

Code 10 is a separation code between the KOEO voltage test and the CM code read out.

Code 111 is everything passed OK in the test that was running.

DTCs 522, 525, or 528 resulted from the voltage being high at either:

-- Pin 10 = A/C input
-- Pin 30 = PNP/CPP input

while cranking the engine or during Key On Engine Off Diagnostic Test Mode (DTM).

Possible causes:

-- A/C circuit shorted to power.
-- CPP circuit open.
-- PNP open.
-- Damaged PCM.
-- Starter relay disconnected during Self-Test.

 

Thankyou subford ' i should have mentioned i have no AC in the truck' also during the test i forgot to mention that cylinder 4 came up on the obd 1 ' does this mean that there might be a problem with that cylinder' ill take the plug out and have a look at it but is there anything else i can do to see why this is comming up .

Also it likes to smoke on start up wich i know this can't be good.

Truck is a 94 f150 4.9

 

What transmission do you have?

 

M5OD 5 Speed Manual Transmission.

 

For 4.9L engines, the clutch pedal must be down during KOEO test or you will get the 522 code.

 

Thankyou subford ' i did not know that' Cheers !