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Retrieving Codes
FAULT CODE DEFINITIONS FOR EEC-IV SYSTEMS (181 - 216)
Chapter 4 58
TEST
CODE CONDITION FAULT CODE DEFINITION
181 C (Trucks ONLY): HEGO (HO2S) sensor
fault unable to switch / lean during part
throttle
182 C Fuel system at lean adaptive limit at idle /
system rich
183 C Fuel system at rich adaptive limit at idle /
system lean
184 C Mass Air Flow sensor above normal
185 C Mass Air Flow sensor below normal
186 C Fault in injector pulse width circuit / high
187 C Fault in injector pulse width circuit / low
188 C (Cars ONLY): Fuel system at lean adaptive
limit at partial throttle / system rich
188 C (Trucks ONLY): HEGO (HO2S) sensor
fault unable to switch / rich during part
throttle
189 C (Cars ONLY): Fuel system at rich adaptive
limit at partial throttle / system lean
189 C (Trucks ONLY): HEGO (HO2S) sensor
fault unable to switch / lean during part
throttle
190 * Adaptive fuel lean limit reached at “Idle,
system rich”
191 C (Cars ONLY): Fuel system at lean adaptive
limit at idle / system rich
192 C (Cars ONLY): Fuel system at rich adaptive
limit at idle / system lean
193 O (Cars ONLY): Flexible fuel sensor circuit
fault
211 C Profile Ignition Pickup (PIP) circuit fault
212 C Loss of ignition diagnostic monitor
signal/SPOUT circuit grounded
213 R SPOUT circuit open
214 C Cylinder identification circuit failure
215 C DIS fault ignition system - coil #1
216 C DIS fault ignition system - coil #2
4
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