Dali Design, Berlin, MD
111 System checks OK
112 (O,M) Intake Air Temperature (IAT) sensor is/was low or grounded
113 (O,M) IAT sensor is/was high or open
114 (O,R) IAT sensor out of range
116 (O,R) Engine Coolant (ECT) sensor out of range
117 (O,M) ECT sensor is/was low or grounded
118 (O,M) ECT sensor is/was high or open
121 (O,R,M) Throttle Position (TP) sensor out of range
122 (O,M) TP low (possibly grounded or open circuit)
123 (O,M) TP is/was high or short to power
124 (M) TP voltage was higher than expected
125 (M) TP voltage was lower than expected
126 (O,R,M) MAP or BARO sensor out of range
128 (M) MAP vacuum has not been changing - check vacuum lines
129 (R) No MAP or Mass Air Flow sensor change during "goose" test
136 (R) Oxygen sensor not switching/system lean Left or Front HO2S
137 (R) Oxygen sensor not switching/system rich Left or Front HO2S
138 (R) Fault in Cold Start Injector circuit
139 (M) Oxygen sensor not switching Left or Front HO2S
144 (M) Oxygen sensor not switching Single, Right or Rear HO2S
157 (R,M) Mass Air Flow signal is/was low or grounded
158 (O,R,M) MAF sensor is/was high or short to power
159 (O,R) MAF sensor is/was out of range
167 (R) No Throttle Position sensor change in "goose" test (must get at least 25% rotation)
171 (M) Oxygen sensor not switching - system was at adaptive limits - Single, Right or Rear HO2S
172 (R,M) Oxygen sensor not switching - system is or was lean - Single, Right or Rear HO2S
173 (R,M) Oxygen sensor not switching - system is or was rich - Single, Right or Rear HO2S
174 (M) Oxygen sensor was slow in switching Single, Right or Rear HO2S
175 (M) Oxygen sensor not switching - system was at adaptive limits - Left or Front HO2S
176 (M) Oxygen sensor not switching - system is or was lean Left or Front HO2S
177 (M) Oxygen sensor not switching - system was rich Left or Front HO2S
178 (M) Oxygen sensor was slow in switching Left or Front HO2S
179 (M) Fuel system was rich at part throttle Single, Right or Rear HO2S
181 (M) Fuel system was lean at part throttle Single, Right or Rear HO2S
182 (M) Fuel system was rich at idle Single, Right or Rear HO2S
183 (M) Fuel system was lean at idle Single, Right or Rear HO2S
184 (M) Mass Air (MAF) output higher than expected
185 (M) Mass Air (MAF) output lower than expected
186 (M) Injector pulse width longer than expected or Mass Air Flow (MAF) lower than expected
187 Injector pulse width shorter than expected or Mass Air Flow (MAF) higher than expected
188 (M) Fuel system was rich at part throttle - Left or Front HO2S
189 (M) Fuel system was lean at part throttle - Left or Front HO2S
191 (M) Fuel system was rich at idle - Left or Front HO2S
192 (M) Fuel system was lean at idle - Left or Front HO2S
193 Failure in Flexible Fuel (FF) sensor circuit
194 (M) Perform cylinder balance test to check for inoperative injectors
195 (M) Perform cylinder balance test to check for inoperative injectors
211 (M) Ignition PIP signal was erratic or missing
212 (M) Ignition TACH signal was erratic (module/wiring) or SPOUT circuit fault
213 (R) Ignition SPOUT or SAW circuit open or shorted
214 (M) Error in Cylinder ID (CID) circuit or signal
215 (M) Primary circuit failure - ignition coil 1
216 (M) Primary circuit failure - ignition coil 2
217 (M) Primary circuit failure - ignition coil 3
218 (M) IDM signal open or high or left coil pack failure
219 (M) SPOUT circuit failure, timing defaulted to 10 degrees - follow code 213 diagnosis
222 (M) IDM open or high or right coil pack failure
223 (M) Dual Plug (DPI), SPOUT or IDM circuit fault
224 (M) Failure in ignition coil primary circuit
225 (R) Knock sensor not tested (ignore if not pinging)
226 (O) Ignition Diagnostic Monitor (IDM) signal fault
232 (M) EI primary coil circuit failure
238 (M) EI primary circuit failure - ignition coil 4
311 (R) AIR system not working - Single, Right or Rear HO2S
312 (R) AIR not diverting
313 (R) AIR not bypassing
314 (R) AIR inoperative, Left or Front HO2S
326 (R,M) Pressure Feedback EGR shows low pressure EGR not seating or not seating intermittantly
327 (O,R,M) EGR feedback signal is/was low
328 (O,R,M) EGR Valve Position (EVP) is/was low
332 (R,M) EGR did not open/respond during test or if memory code, did not open intermittantly
334 (O,R,M) EVP sensor is/was high
335 (O) EGR feedback signal is/was out of range
336 (O,R,M) PFE sensor signal is/was was high
337 (O,R,M) EGR feedback signal is/was was high
338 (M) Cooling system did not heat up (check cooling system / thermostat operation)
339 (M) Cooling system overheated (check cooling system / thermostat operation)
341 (O) Octane jumper installed (information only code to notify you if it is installed)
411 (R) Idle speed system not controlling idle properly (generally idle too high)
412 (R) Idle speed system not controlling idle properly (generally idle too low)
452 (M) Vehicle Speed Sensor (VSS) problem
511 (O) No power to PCM pin 1 or bad PCM (processor)
512 (M) Memory power (PCM pin 1) was interrupted - Was battery disconnected ?
513 (O) Replace processor (PCM) (internal failure)
519 (O) PSP switch/circuit open
521 (R) Wheel not turned during test or PSP problem
522 (O) Park/Neutral Position (PNP) or Clutch Pedal Position (CPP) circuit fault Transmission MLP sensor out of range in park
524 Problem in low speed fuel pump circuit
525 (O,M) Park/Neutral Position (PNP) or Clutch Pedal Position (CPP) circuit fault
528 (M) System shows voltage at pin 10 (is A/C on ?) or pin 30 (PNP, CPP switch)
529 (M) Data Communications Link to processor failure
Service any EEC codes, erase memory and retest. If code is still present refer to instrument cluster diagnosis manual.
533 (M) Data Communications Link to instrument cluster failure - see 529
536 (O,R,M) Brake On Off open or shorted to ground
538 (R) System did not receive "goose" test - TESTS
539 (O) System shows voltage at PCM pin 10. Is A/C on ?
542 (O,M) Fuel pump open, bad ground or always on -
543 (O) Fuel pump monitor circuit shows no power (M) (Service 556 code first if present) Fuel pump relay or battery power feed was open
551 Problem in Intake Manifold Runner Control (IMRC) solenoid/circuit
552 (O) AIRB solenoid/circuit failure
553 (O) AIRD solenoid/circuit failure
554 (O) Fuel Press Regulator Control solenoid/circuit fault
556 (O,M) Fuel pump relay primary circuit fault
557 (O,M) Low speed pump relay primary circuit fault
558 (O) EGR vacuum regulator solenoid/circuit failure
559 (O) A/C relay primary circuit fault
563 (O) High Fan Control (HFC) circuit failure
564 (O) Fan Control (FC) circuit failure
565 (O) Canister Purge 1 solenoid/circuit failure
566 (O) transmission 3/4 shift solenoid/circuit
569 (O) Canister Purge 2 solenoid/circuit failure
578 (M) A/C pressure sensor VREF short to ground
579 (M) ACP sensor did not change with A/C on
581 (M) Cooling fan current was excessive
582 (O) Open cooling fan circuit
583 (M) Fuel pump current was excessive
584 (M) Open power ground circuit
585 (M) A/C clutch current was excessive
586 (M) Open circuit in A/C clutch
587 (O, M) Communication problem between PCM and Variable Control Relay Module (VCRM)
617 (M) Transmission shift failure (1/2 shift)
618 (M) Transmission shift failure (2/3 shift)
619 (M) Transmission shift failure (3/4 shift)
621 (O) Solenoid/circuit failure - shift solenoid 1
622 (O) Solenoid/circuit failure - shift solenoid 2
624 (O,M) Solenoid/circuit failure -Electronic Pressure Control (EPC) current is high
625 (O,M) Solenoid/circuit failure - Electronic Pressure Control (EPC) current is low
626 (O) Transmission Coast Clutch (CCS) Solenoid/circuit fault
627 (O) Torque Converter Clutch circuit fault
628 (M) Excessive converter clutch slippage
629 (O,M) Torque Converter Clutch circuit fault
631 (O) Overdrive Cancel Light circuit problem
632 (R) E4OD - Transmission Control Switch (TCS) should be cycled once between engine ID and Goose test
633 (O) 4x4L switch should be in 4x2 or 4x4 high for the test
634 (O,M) Park/Neutral Position (PNP) or Clutch Pedal Position (CPP) circuit fault
Electronic shift transmission - Manual Lever Position (MLP) sensor out of range in PARK
636 (O,R) Transmission Oil Temperature (TOT) sensor out of range
637 (O,M) TOT sensor is/was high or open
638 (O,M) TOT sensor is/was low or grounded
639 (R,M) Transmission Speed sensor (TSS) circuit fault
641 (O) Transmission solenoid/circuit failure Shift Solenoid 3
643 (O)(M) Torque Converter Clutch (TCC) circuit
645 (M) Transmission 1st gear failure
646 (M) Transmission 2nd gear failure
647 (M) Transmission 3rd gear failure
648 (M) Transmission 4th gear failure
649 (M) Transmission EPC system failure
651 (M) Transmission EPC solenoid/circuit fault
652 (O) Torque Converter Clutch (TCC) circuit fault
654 (O) Transmission selector not in PARK
656 (M) Torque Converter Clutch (TCC) slip
657 (M) Transmission temperature was excessive
998 (R) Did not pass Key On Engine Off test yet (Get 111 in KOEO first)
(O) Transmission Electronic Pressure Control (EPC) solenoid/circuit fault
[EEC Tests]
© Copyright 1997-2003 Dali Design - No part of this document may be reproduced without written permission from the author.
Dali Design, Berlin, MD
Remove the brackets to email: jthorsse[@]mchsi[.]com