1968 Shelby GT500

2 Digit Self-test Codes 11-32

Abbreviations:
KOEO = Key On Engine Off
CM = Continues Memory
KOER = Key On Engine Running

# KOEO CM KOER Code Definition
NC
X
X
X
No Codes
10    
X
Cylinder #1 Failed Cylinder Balance Test.
11
X
X
X
System pass!
12    
X
Cannot control RPM during ER Self-Test high RPM check.
13    
X
Cannot control RPM during ER Self-Test low RPM check.
14  
X
  Two or more successive erratic Profile Ignition Pickup (PIP) pulses occurred, resulting in a possible engine miss or stall.
15
X
    EEC permanent Read Only Memory (ROM) test failed.
 
X
  EEC battery powered Keep Alive Memory (KAM) test failed.
16
X
    IDM signal not received.
   
X
RPM too low to perform HEGO test.
17    
X
RPM below Self-Test limit with Idle Air Control off.
18    
X
SPOUT circuit open or spark angle word failure.
 
X
  IDM circuit failure or SPOUT circuit grounded.
19
X
    Failure in EEC internal voltage.
 
X
  Cylinder Identification CID circuit failure.
   
X
RPM erratic, dropped too low during test.
20    
X
Cylinder #2 Failed Cylinder Balance Test.
21
X
X
X
ECT out of self test range 0.3 to 3.7 volts.
22
X
X
X
MAP/BP sensor out of self test range.
23
X
 
X
Closed throttle TPS voltage higher or lower than expected.
24
X
X
X
ACT sensor out of self test range 0.3 to 3.7 volts.
25    
X
Knock not sensed during dynamic test.
26
X
    MAF sensor was greater than 0.7 volts with engine off.
   
X
MAF sensor was not between 0.2 and 1.5 volts with engine running.
X
 
X
TOT sensor out of self test range.
27       ?
28
X
 
X
VAT sensor out of self test range.
 
X
  Loss of IDM, right side.
29  
X
  Insufficient input from vehicle speed sensor.
30    
X
Cylinder #3 Failed Cylinder Balance Test.
31
X
 
X
PFE or EVP circuit below minimum voltage of 0.24 volts.
 
X
  PFE or EVP circuit has intermittently failed below minimum voltage of 0.24 volts.
32
X
 
X
EVP circuit below minimum voltage of 0.24 volts.
 
X
  EVP circuit has intermittently failed below minimum voltage of 0.24 volts.

Codes 33-58
Codes 59-74
Codes 75-99
Three Digit Codes

 
 
 
 
 

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