1968 Shelby GT500

Two Digit Codes 59-74

# KOEO CM KOER Code Definition
59
X
X
  Low speed fuel pump circuit failure.
X
X
  2 – 3 shift error (E4OD).
60    
X
Cylinder #6 Failed Cylinder Balance Test.
61
X
    ECT sensor is less than the Self-Test minimum of 0.2 volts.
 
X
  ECT sensor has intermittently failed below 0.2 volts.
62
X
    4/3 or 3/2 pressure switch circuit failed open.
 
X
  Converter clutch error (E4OD).
63
X
    TPS circuit below minimum 0.6 volts.
 
X
  TPS circuit has intermittently failed below minimum 0.6 volts.
64
X
    ACT sensor is less than the Self-Test minimum of 0.2 volts.
 
X
  ACT sensor has intermittently failed below 0.2 volts.
65    
X
Overdrive OFF switch was not cycled during KOER test (user error).
66  
X
  MAF sensor went below 0.4 volts during the last 80 warm-up cycles.
X
X
  TOT sensor output was less than Self-Test minimum value of 0.15 volts.
67
X
X
  Neutral safety circuit failure.
   
X
A/C circuit was on during KOER Self-Test.
68  
X
  Transmission recently overheated, or TOT sensor intermittently failed below 0.2 volts.
69  
X
  3 – 4 shift error.
70    
X
Cylinder #7 Failed Cylinder Balance Test.
71  
X
  Software re-initialization detected or Cluster ControlAssembly circuit failed.
72  
X
  Power interruption detected or Message Center Control Assembly circuit failed.
   
X
Insufficient MAF/MAP change during Dynamic Response Test (user error).
73    
X
TPS senor did not exceed 25% rotation during Dynamic Response Test (user error).
74    
X
Brake On/Off switch not actuated during KOER test (user error).

KOEO = Key On Engine Off, CM = Continues Memory, KOER = Key On Engine Running

Codes 10-32
Codes 33-58
Codes 75-99
Three Digit Codes

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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