• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 1994 - 1995 Specific Tech

Error codes

  • Thread starter Thread starter 1995 GT
  • Start date Start date Jul 5, 2010
1

1995 GT

New Member
Oct 8, 2009
17
0
0
New Briatain, PA
Jul 5, 2010
#1
  • Jul 5, 2010
  • #1
Ok live in the philidelphia area need a code reader for a 95 mustang! Went to local pepboys and the told me they don't carry obd1 readers anymore! Anymore point me in the right direction! Online maybe?
 
W

wytstang

Mustang Master
Mar 14, 2004
4,988
4
78
Summerville,SC missing South Fl. weather :(
Jul 5, 2010
#2
  • Jul 5, 2010
  • #2
How to Prepare for the Self-Test

To check for codes without buying a code reader is simple. If your EEC is wired correctly, the engine light works, and there are not any electrical faults in the vehicle you can get the codes out of your EEC.

1. Turn key to OFF.
2. Get a length of wire that can connect the STI to the negative battery terminal or body ground.
3. Ground the Self-Test Input.
4. Get some paper and a pen.
5. Get comfortable in the drivers seat.
6. Try to keep your self from getting distracted from here on.
7. Turn key to RUN.
8. You will hear some relays engage and the fuel pumps prime the system. This is the EEC beginning the test.
9. When the fuel pumps stop be ready to count!

^^**Located on the passenger side strut tower facing firewall**

How To Count “Check Engine” Light Blinks

When the “Check Engine” light blinks during the test you will get several different blinks, the separation time between blinks is used to indicate what information is being displayed.

Turn key to RUN.
You will hear some relays engage and the fuel pumps prime the system. This is the EEC beginning the test.
The fuel pumps will stop and the EEC will now begin giving codes.
You may catch a brief flickering of the light. This is a rapid code read that is used by the code readers you can purchase. Do not worry all those rapid flashes you just say flicker buy will now be given at a slower pace of �, 2, & 4 second pauses.
First digit of first KOEO code (1/2 second between blinks)
2 second pause
Second digit of first KOEO code (1/2 second between blinks)
4 second pause
Next KOEO code
Once all KOEO codes are read the EEC will repeat them
6 second pause
Single Separator Blink (this indicates the change from KOEO codes to CM codes)
6 second pause
Codes from Continues Memory (uses same 1/2, 2, and 4 second timing as KOEO codes and also repeats them)
If nothing has been recorded by the EEC since last battery disconnect you will see:

Blink - 2 sec - blink - 4 sec - blink - 2 sec - blink - 6 sec - blink - 6 sec - blink - 2 sec - blink - 4 sec - blink - 2 sec � blink

This translates into 11-11 current condition (KOEO) and 11-11 in the continues memory (CM); or SYSTEMPASS

This may seem hard to count; recommendation is to record codes with slashes, and to lump them all together. Sort them out into numerical codes later. Here is an example of this:

This would give you codes; 41, 83, 14 & 18. If you miss some of the codes or feel you are counting wrong continue to count the remaining codes for practice and to compare to the next code test. When finished simply turn the key to OFF wait 15 seconds then back to RUN. The codes will be presented again.

Our OBD 1 system uses a 3 digit code system, here are all the codes and what they mean Ford Fuel Injection 3 Digit Self-test Codes 111-171 *all info above comes from that link*
This works and saves you from the cost of a scanner.
 

toyman

10 Year Member
Jul 19, 2007
1,944
54
79
Vernon BC
Jul 5, 2010
#3
  • Jul 5, 2010
  • #3
1995 GT said:
Ok live in the philidelphia area need a code reader for a 95 mustang! Went to local pepboys and the told me they don't carry obd1 readers anymore! Anymore point me in the right direction! Online maybe?
Click to expand...

Try this or just Google for more options.

Save on Equus 3145 at ToolTopia.com.
 
1

1995 GT

New Member
Oct 8, 2009
17
0
0
New Briatain, PA
Jul 10, 2010
#4
  • Jul 10, 2010
  • #4
Thanks I ordered that code reader from tooltopia! Let ya no how it works!! Good price too.
 
You must log in or register to reply here.

Similar threads

2
Running very very rich
  • 2esoteric
  • Oct 31, 2025
  • Fox 5.0 Mustang Tech
Replies
4
Views
362
Fox 5.0 Mustang Tech Oct 31, 2025
Noobz347
M
Progress Thread 1993 Ford Mustang 5.0 convertible stock manual - ODB Codes shows running lean
  • mcalvo
  • Feb 11, 2025
  • Fox 5.0 Mustang Tech
  • 2
Replies
20
Views
1K
Fox 5.0 Mustang Tech Feb 22, 2025
AeroCoupe
READ ME FIRST - Noobz busts it down for Noobs
  • Noobz347
  • May 16, 2025
  • The Welcome Wagon
Replies
0
Views
104
The Welcome Wagon May 16, 2025
Noobz347
S
Help with window and possible engine
  • StefRena22
  • Jun 12, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
19
Views
935
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jun 21, 2025
Willybill32
K
Engine 2000 Mustang GT - Fuel issue post-blown spark plug repair
  • kenster1092
  • Feb 26, 2026
  • SN95 4.6L Mustang Tech
Replies
4
Views
389
SN95 4.6L Mustang Tech Mar 10, 2026
kenster1092
K
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 1994 - 1995 Specific Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?