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Diagnostic Trouble Code Reference

NOTE: Record trouble codes found during KOEO, KOER and Continuous Memory tests while performing QUICK TEST. See the DIAGNOSTIC TROUBLE CODE REFERENCE  table to find appropriate TEST and follow procedures.
NOTE: Trouble Codes beginning with a "6" are automatic transmission-related problems. If codes are present, see the TRANSMISSION SERVICING article.
DIAGNOSTIC TROUBLE CODE REFERENCE

Code/Definition KOEO(Step No.) KOER(Step No.) Continuous
No Codes/Codes Not Listed QA(1)  QA(1)  QA(1) 
111 Pass Pass Pass
112 - Temperature Sensor Circuit (IAT & ECT) DA(20)  - DA(90) 
113 - Temperature Sensor Circuit (IAT & ECT) DA(10)  - DA(90)) 
116 - Temperature Sensor Circuit (IAT & ECT) DA(1)  DA(1)  -
117 - Temperature Sensor Circuit (IAT & ECT) DA(20)  - DA(90) 
118 - Temperature Sensor Circuit (IAT & ECT) DA(10)  - DA(90) 
121 - Throttle Position (TP) Sensor Circuit DH(2)  DH(1)  DH(100) 
122 - Throttle Position (TP) Sensor Circuit DH(10)  - DH(94) 
123 - Throttle Position (TP) Sensor Circuit DH(3)  - DH(90) 
157 - MASS Airflow (MAF) Sensor Circuit - - DC(10) 
158 - MASS Airflow (MAF) Sensor Circuit DC(21)  - DC(21) 
159 - MASS Airflow (MAF) Sensor Circuit DC(1)  DC(1)  -
172 - Heated Oxygen Sensor (HO2S) Circuit - H(1)  H(1) 
173 - Heated Oxygen Sensor (HO2S) Circuit - H (1)  H(1) 
179 - Adaptive Fuel Strategy - - HA(1) 
181 - Adaptive Fuel Strategy - - HA(1) 
211 - Distributor Ignition System Profile Ignition Pick-Up (PIP) Ckt & Ignition Diagnostic Monitor (IDM) Ckt - - NA(1) 
212 - Distributor Ignition System Profile Ignition Pick-Up (PIP) Ckt & Ignition Diagnostic Monitor (IDM) Ckt - - NA(2) 
213 - No Spark Control (Spout Circuit Open) - PA(1)  -
214 - Cylinder Identification (CID) Circuit - - DR(1) 
244 - Cylinder Identification (CID) Circuit - DR (1)  -
327 - EGR Valve Position Sensor Ckt, EGR Vacuum Solenoid Valve Ckt & EGR Vent Solenoid Valve Ckt DD(1)  DD(1)  DD(90) 
332 - EGR Valve Position Sensor Ckt, EGR Vacuum Solenoid Valve Ckt & EGR Vent Solenoid Valve Ckt - DD(30)  DD (100) 
337 - EGR Valve Position Sensor Ckt, EGR Vacuum Solenoid Valve Ckt & EGR Vent Solenoid Valve Ckt DD(10)  DD(10)  DD(90) 
411 - Idle Air Control (IAC) Valve Circuit - KE(15)  -
412 - Idle Air Control (IAC) Valve Circuit - KE(1)  -
452 - Vehicle Speed Sensor (VSS) Circuit - - DP(1) 
511 (1) (1) (1)
512 - PCM Keep Alive Memory (KAM) Circuit - - QB(1) 
513 (1) (1) (1)
519 - Power Steering Pressure (PSP) Switch Circuit FF(10)  - -
521 - Power Steering Pressure (PSP) Switch Circuit - FF(20)  -
522 (2) - - -
536 - Brake Switch Circuit - FD(1)  -
538 - Dynamic Response Test - M  -
539 - A/C Relay & Refrigerant Pressure Switch Circuits KM(6)  - -
554 - Pressure Regulator Control (PRC) Solenoid Valve Circuit KN(1)  - -
559 - A/C Relay & Refrigerant Pressure Switch Circuits KM(1)  - -
563 - Low Fan Control (LFC) Ckt/High Fan Control (HFC) Ckt KF(1)  - -
564 - Low Fan Control (LFC) Ckt/High Fan Control (HFC) Ckt KF(1)  - -
565 - Purge Solenoid Valve Circuit KD(1)  - -
571 - EGR Valve Position Sensor Ckt, EGR Vacuum Solenoid Valve Ckt & EGR Vent Solenoid Valve Ckt DD(20)  - -
572 - EGR Valve Position Sensor Ckt, EGR Vacuum Solenoid Valve Ckt & EGR Vent Solenoid Valve Ckt DD(20)  - -
998 (3) FMEM - -
No Codes/Codes Not Listed (4) QA(1)  QA(1)  QA(1) 
(1) Replace PCM.
(2) See SYSTEM/COMPONENT TESTS - 2.0L article.
(3) PCM running in Failure Mode Effects Management (FMEM).
(4) For codes not listed, see Circuit Test QA1.
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