1968 Shelby GT500

Three Digit Codes 172-223

#

When

3-Digit Code Definitions

KOEO

CM

KOER

172

 

 

X

HEGO sensor circuit indicates system lean (right side)

173

 

 

X

HEGO sensor circuit indicates system rich (right side)

174

 

X

 

HEGO switching time is slow

175

 

X

 

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

176

 

X

 

HEGO sensor circuit indicates system lean (left side)

177

 

X

 

HEGO sensor circuit indicates system rich (left side)

178

 

X

 

HEGO switching time is slow.

179

 

X

 

Right side still rich, at leanest adaptive limit, during part throttle.

181

 

X

 

Right side still lean, at richest adaptive limit, during part throttle.

182

 

X

 

Right side still rich, at leanest adaptive limit, at idle.

183

 

X

 

Right side still lean, at richest adaptive limit, at idle.

184

 

X

 

MAF higher than expected

185

 

X

 

MAF lower than expected

186

 

X

 

Injector pulse width longer than expected

187

 

X

 

Injector pulse width shorter than expected

188

 

X

 

Left side still rich, at leanest adaptive limit, during part throttle.

189

 

X

 

Left side still lean, at richest adaptive limit, during part throttle.

191

 

X

 

Left side still rich, at leanest adaptive limit, at idle.

192

 

X

 

Left side still lean, at richest adaptive limit, at idle.

193

X

 

 

Flexible Fuel sensor circuit failure.

194

 

X

 

Run cylinder balance diagnostic test.

195

 

X

 

Run cylinder balance diagnostic test.

211

 

X

 

Two or more successive erratic Profile Ignition Pickup (PIP) pulses occurred, resulting in a possible engine miss or stall.

212

 

X

 

Loss of IDM input to EEC or SPOUT circuit grounded.

213

 

 

X

SPOUT circuit open

214

 

X

 

Cylinder Identification (CID) circuit failure

215

 

X

 

EEC detected coil 1 primary circuit failure

216

 

X

 

EEC detected coil 2 primary circuit failure

217

 

X

 

EEC detected coil 3 primary circuit failure

218

 

X

 

Loss of IDM signal (left side)

219

 

X

 

SPOUT failure, spark timing has defaulted to 10 degrees BTDC.

222

 

X

 

Loss of IDM signal (right side)

223

 

X

 

Loss of Dual Plug Inhibit control

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

Codes 111-171
Codes 224-525
Codes 526-586
Codes 587-656
Codes 657-999
Two Digit Codes

 
 
 
 
 

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