1968 Shelby GT500

3 Digit Self-test Codes 111-171

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

#

When

3-Digit Code Definitions

KOEO

CM

KOER

NC

X

X

X

No Codes

111

X

X

X

System pass

112

X

 

 

ACT sensor signal is less than the Self-Test minimum of 0.2 volts.

 

X

 

ACT circuit has intermittently failed below minimum 0.2
volts.

113

X

 

 

ACT sensor signal is greater than the Self-Test maximum of 4.6 volts.

 

X

 

ACT circuit has intermittently failed above the maximum of 4.6 volts.

114

X

 

X

ACT out of self test range 0.3 to 3.7 volts.

116

X

 

X

ECT out of self test range 0.3 to 3.7 volts.

117

X

 

 

ECT sensor signal is less than the Self-Test minimum of 0.2 volts.

 

X

 

ECT circuit has intermittently failed below minimum 0.2 volts.

118

X

 

 

ECT sensor signal is greater than the Self-Test maximum of 4.6 volts.

 

X

 

ECT circuit has intermittently failed above the maximum of 4.6 volts.

121

X

 

X

Closed throttle TPS voltage higher or lower than expected.

 

X

 

TP sensor was inconsistent with the MAF/MAP value in the last 80 drive cycles.

122

X

 

 

TPS circuit below minimum 0.6 volts.

 

X

 

TPS circuit has intermittently failed below minimum 0.6 volts.

123

X

 

 

TP circuit above maximum 4.5 volts.

 

X

 

TPS circuit has intermittently failed above maximum 4.5 volts.

124

 

X

 

TP sensor was higher than expected with the MAF/MAP value in the last 80 drive cycles.

125

 

X

 

TP sensor was lower than expected with the MAF/MAP value in the last 80 drive cycles.

126

 X

X

X

MAP/BP sensor out of self test range 1.4 to 1.6 volts.

128

 

X

 

MAP sensor vacuum was not greater than 2 in-Hg (7 kPa) during normal vehicle operation.

129

 

 

X

Insufficient MAF/MAP change during Dynamic Response Test.

136

 

 

X

HEGO sensor circuit indicates system lean (left side)

137

 

 

X

HEGO sensor circuit indicates system rich (left side)

139

 

X

 

No HEGO sensor switching detected or disconnected (left side)

141

 

X

 

HEGO sensor circuit indicates system lean (both sides)

144

 

X

 

No HEGO sensor switching detected or disconnected (right side)

157

 

X

 

MAF sensor went below 0.4 volts during the last 80 warm-up cycles.

158

X

X

 

MAF sensor went above 4.5 volts during the last 80 warm-up cycles.

159

X

 

 

MAF signal was greater than 0.70 volt during KOEO.

 

 

X

MAF signal was not between 0.20 and 1.50 volts during KOER.

167

 

 

X

TPS did not exceed 25% rotation during the Dynamic Response Test.

171

 

X

 

Fuel system at adaptive limit, HEGO unable to switch (right side)

Codes 172-223
Codes 224-525
Codes 526-586
Codes 587-656
Codes 657-999
Two Digit Codes

 
 
 
 

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