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Diagnostic Trouble Code Definition

DIAGNOSTIC TROUBLE CODE IDENTIFICATION

Code (1) System Affected Probable Cause
0 ECM No Signal To ECM
1  Heated Oxygen Sensor (HO2S) Problem In HO2S Circuit
3  MAP Sensor Electrical Problem In MAP Sensor
4  Crank Angle Sensor (CKP) Open Or Shorted Signal Circuit
5  MAP Sensor Electrical problem in MAP Sensor
6  Engine Coolant Temperature (ECT) Sensor Open Or Shorted Signal Circuit
7  Throttle Position (TP) Sensor Open Or Shorted Signal Circuit
8  Crank Angle Sensor (TDC) Open Or Shorted Signal Circuit
9  Crank Angle Sensor (CYP) Open Or Shorted Signal Circuit
10  Intake Air Temperature(IAT) Problem With Sensor
12  EGR System No EGR Action
13  Barometric Pressure (BARO) Sensor Problem With PA Circuit
14  Idle Air Control(IAC) Valve Open Or Shorted Signal Circuit
15  Ignition Output Signal Electrical Problem In Signal Circuit
16  Fuel Injector Problem In Fuel Injector Circuit
17  Vehicle Speed Sensor (VSS) Open Or Shorted Signal Circuit
20 (2) Electrical Load Detector (ELD) Problem With ELD Circuit
21  Spool Solenoid Valve Problem With VTEC Spool Solenoid Circuit
2222  VTEC Oil Pressure Switch Problem In VTEC Oil Pressure Switch Circuit
23  Knock Sensor (KS) Knock Sensor Circuit Fault
30  A/T FI Signal A Problem In A/T Control Unit And ECM Circuit
31  A/T FI Signal B Problem In A/T Control Unit And ECM Circuit
41  Heated Oxygen Sensor (HO2S) Heater Problem With HO2S Circuit
43  Fuel Supply System Problem With HO2S Circuit Or Fuel System
(1)
If codes other than these are indicated, repeat self-diagnosis. If code(s) reappear, substitute a known good ECM, and recheck codes. If code(s) clear, replace ECM.
(2)
MIL does not come on when there is a malfunction in ELD circuit, but code is stored in ECM memory.