Electronic Engine Control IV (EEC-IV)
Engine Running Codes |
11 |
System Pass. |
12 |
Engine speed not within self test Upper Limit. |
13 |
Engine speed not within self test Lower Limit. |
13 |
Idle Speed Control Motor did not move. |
16 |
Idle RPM High with ISC Retracted (2.5L). |
16 |
RPM above self test Limit with ISC Off (1986-90 1.9L EFI). |
16 |
RPM too Low to Perform Heated Oxygen Sensor Test (other
vehicles). |
17 |
Idle RPM Low with ISC Retracted (1.9L & 2.5L CFI). |
17 |
RPM below self test Limit with ISC Off (1986-90 1.9L EFI). |
18 |
Spark out (SPOUT) circuit open. |
18 |
Spark Angle Word (SAW) circuit failure (1.9L SFI). |
19 |
failure in PCM Internal voltage. |
19 |
Erratic RPM during Hard Idle self test. |
19 |
RPM Drop too Low during ISC Off Test (1.9L EFI). |
21 |
Engine Coolant Temperature (ECT) Sensor out of self test
Range. |
22 |
Manifold Absolute Pressure/Barometric Pressure Sensor out of
self test Range. |
23 |
Throttle Position Sensor out of self test Range. |
23 |
Fuel Injector Pump Lever Sensor Input is out of self test
Range (Diesel). |
24 |
Intake Air Temperature/Air Charge Temperature Sensor is out of
self test Range. |
25 |
Knock not Sensed during Dynamic Response Test. |
26 |
Mass Air Flow/Vane Air Flow Sensor out of self test Range. |
26 |
Transmission Fluid Temperature Sensor Input out of self test
Range (5.0L, 5.8L, 7.3L & 7.5L Truck). |
28 |
Vane Air Temperature Sensor Input out of self test Range (1.9L
EFI). |
31 |
EGR Valve Position/Pressure Feedback EGR circuit below minimum
voltage. |
32 |
EGR not Controlling (2.3L OHC & 3.8L CFI). |
32 |
EGR Valve not Seated (1.9L CFI, 2.9L & 3.0L SHO). |
32 |
EGR Valve Position/Pressure Feedback EGR voltage below closed
voltage (other vehicles). |
33 |
EGR not Closing Properly (2.3L OHC & 3.8L CFI). |
33 |
EGR Valve opening not detected (other vehicles). |
34 |
EGR Valve opening not detected (2.3L OHC & 3.8L CFI). |
34 |
Defective EGR Pressure Transducer Sensor (1.9L CFI, 2.3L HSC
EFI & 3.0L). |
34 |
EGR on/Off Control (2.3L Turbo). |
34 |
EGR Valve Position/Pressure Feedback EGR voltage above closed
Limit (other vehicles). |
35 |
RPM too Low to Perform EGR Test (2.3L OHC & 3.8L CFI). |
35 |
EGR Valve Position/EGR Pressure Feedback. EGR circuit above
maximum voltage (other vehicles). |
36 |
System Indicates Lean at Idle. |
37 |
System Indicates Rich at Idle. |
41 |
System Indicates Lean. |
42 |
System Indicates Rich. |
44 |
Secondary Air System Inoperative. |
45 |
Secondary Air Upstream during self test. |
46 |
Secondary Air not Bypassed during self test. |
47 |
Measured Air Flow Low at Base Idle. |
48 |
Measured Air Flow High at Base Idle (1986-90 1.9L EFI). |
52 |
Power Steering Pressure Switch circuit did not change states. |
54 |
Intake Air Temperature/Air Charge Temperature circuit open. |
55 |
Key Power Check. |
56 |
Mass Air Flow/Vane Air Flow Sensor circuit above maximum
voltage. |
58 |
Idle Tracking Switch circuit open or grounded (CFI). |
61 |
Engine Coolant Temperature Sensor circuit grounded. |
63 |
Throttle Position Sensor circuit below minimum voltage. |
64 |
Intake Air Temperature/Air Charge Temperature circuit
grounded. |
65 |
Transmission Control Switch/Overdrive Cancel Switch circuit
did not change states. |
68 |
Idle Tracking Switch closed (1.9L, 2.3L, 2.5L & 3.8L CFI). |
72 |
Insufficient Manifold Absolute Pressure/Mass Air Flow change
during Dynamic Response Test. |
73 |
Insufficient Throttle Position change during Dynamic Response
Test. |
74 |
Brake on/Off circuit did not change during self test. |
75 |
Brake on/Off circuit closed/ECA Input open. |
76 |
Insufficient Vane Air Flow Sensor Output change during Dynamic
Response Test. |
77 |
Operator Error - Dynamic Response Test. |
78 |
Re-Initialization Check. |
91 |
Heated Oxygen Sensor circuit Indicates Lean. |
92 |
Heated Oxygen Sensor circuit Indicates Rich. |
94 |
Secondary Air Injection Inoperative. |
98 |
Hard Fault Present. |
99 |
Electronic Engine System has not learned to Control Idle. |
111 |
System Pass. |
114 |
Intake Air Temperature/Air Charge Temperature Higher or Lower
than Expected. |
116 |
Engine Coolant Temperature Higher or Lower than Expected. |
121 |
Closed Throttle voltage Higher or Lower than Expected. |
121 |
Indicates Throttle Position voltage Inconsistent with Mass Air
Flow Sensor. |
126 |
Manifold Absolute Pressure/Barometric Pressure Sensor Higher
or Lower than Expected. |
129 |
Insufficient Manifold Absolute Pressure/Mass Air Flow change
during Dynamic Response Test. |
136 |
System Indicates Lean (Bank No. 1). |
137 |
System Indicates Rich (Bank No. 2). |
138 |
Cold Start Injector Flow insufficient. |
141 |
Flexible Fuel Control. |
159 |
Mass Air Flow Higher or Lower than Expected. |
167 |
Insufficient Throttle Position change during Dynamic Response
Test. |
172 |
Heated Oxygen Sensor System Indicates Lean. |
173 |
Heated Oxygen Sensor System Indicates Rich. |
176 |
Insufficient Throttle Position change during Dynamic Response
Test (4.9L). |
213 |
Spark Output (SPOUT) circuit open. |
225 |
Knock not Sensed during Dynamic Response Test. |
244 |
Cylinder Identification Sensor circuit failure (2.0L). |
311 |
AIR System Inoperative/AIR System Inoperative (Bank No. 1 with
Dual Heated Oxygen Sensor). |
312 |
AIR Misdirected. |
313 |
AIR not Bypassed. |
314 |
AIR System Inoperative. |
326 |
Pressure Feedback EGR circuit voltage Low (other vehicles). |
327 |
EGR circuit below minimum voltage. |
328 |
EGR Valve Position Sensor closed Valve voltage Lower than
Expected. |
332 |
Insufficient EGR Flow detected. |
334 |
EGR Valve Position Sensor closed Valve voltage Higher than
Expected. |
336 |
Pressure Feedback EGR circuit voltage Higher than Expected. |
337 |
EGR Valve Position/Pressure Feedback EGR circuit above maximum
voltage. |
411 |
Cannot Control RPM - Low RPM Check. |
412 |
Cannot Control RPM - High RPM Check. |
511 |
Read out Memory Test failure. |
513 |
PCM Internal voltage failure. |
521 |
Power Steering Pressure Switch circuit did not change states. |
536 |
Brake on/off circuit failure/not actuated. |
538 |
Insufficient RPM change during Dynamic Response Test. |
538 |
Invalid Cylinder Balance Test Due to Throttle Movement during
Test. |
538 |
Invalid Cylinder Balance Test Due to Cylinder Identification
Sensor circuit failure. |
539 |
A/C or Defrost on. |
625 |
Hard Fault is Present (5.8L). |
636 |
Transmission Fluid Temperature higher or lower than expected. |
639 |
Insufficient Input from Turbine Speed Sensor. |
653 |
Torque Converter Solenoid did not change states. |
659 |
High Vehicle Speed in Park Indicated. |
675 |
Transmission Range Sensor circuit voltage out of range. |
998 |
Hard Fault Present. |
The Diagnostic Codes and Explanations are
derived from Manufacturer supplied Technical Data. WesTech does not guarantee the
accuracy of this Information nor can it be held liable for providing it. |