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EEC-IV/ OBD1 code help


Chapap

Well-Known Member
U.S. Military - Veteran
Joined
Jul 31, 2021
Messages
1,068
City
NW Florida
Vehicle Year
1994
Engine
2.3 (4 Cylinder)
Transmission
Manual
Total Drop
1.5” till I get these springs replaced
Tire Size
225-70-R14
Well I got some codes off the computer via the flashing light. I have about 60 digits. Any way of separating 2 and 3 digit codes?
 
It's been a while, but if I remember correctly, short pauses are between digits. Long pauses are between codes. So,

FLASH FLASH FLASH . FLASH FLASH - FLASH FLASH . FLASH FLASH FLASH

Is two codes, being 32 and 23. NOTE a . is a short pause, - is a long pause.
 
According to the book Ford's '93-'94 EEC-IV/ OBD1 uses a 3 digit code for the trouble codes.

The codes will always start with a 111 code. This is system pass / self check code.

All digits after that will be your codes using the flash sequence that 1990rangerinSK mentioned. So 111 would read flash . flash . flash - then pause for a longer time then on to the next code.

Once the codes are done the light will flash the 111 code again signaling the codes will repeat so if you miss them just wait and it will flash them again. It will continuously repeat the codes.

IF you do not know what the codes mean post them here and we will tell you what the codes are for.
 
Last edited:
111 is a pass code. It doesn't always flash that, only when no other codes are present for that test section.
 
111 is a pass code. It doesn't always flash that, only when no other codes are present for that test section.

You're correct and I was mistaken, I had GM's OBD-1 in mind when I was typing that. GM code 12 always flashes. My bad...
 
All good. Just wanted to clear that up in case it caused any confusion to the OP.
 
Ouch. I've always good things about that product, but that's not encouraging!
 
I got the codes. I recorded it this time so I could verify. Here’s what I read: 335, 335, 1, eight codes, repeated eight codes. What does the one mean?
 
335 is typically triggered by a failed DPFE sensor.

What do you mean 'eight codes'?
 
Eight each: three digit codes
 
What were the codes?
 
1 is the separator between KOEO and stored/continuous memory codes.
 

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