Trouble Code Definition
NOTE:
When DTC tests indicate to check a component, see indicated component SYSTEM/COMPONENT TESTS
article. For Diagnostic Trouble Code (DTC) illustration symbol identification, see Fig 1
. To identify ECM connector terminals, see WIRING DIAGRAMS
section.
DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION CHART
| Generic DTC | OBD-II DTC | System Affected | Probable Cause |
|---|---|---|---|
| 11 | P0340 | Camshaft Position | No Crank Signal Sensor |
| 12 | P0100 | Mass Airflow Sensor Circuit | Open/Shorted Circuit |
| 13 | P0115 | Engine Coolant Temperature Sensor | Open/Shorted Circuit |
| 14 | P0500 | Vehicle Speed Sensor (VSS) | No VSS Signal |
| 21 | P1320 | Ignition Signal Circuit | Open/Shorted Circuit |
| 25 | P0505 | Idle Air Control (IACV) | Incorrect Idle Speed |
| 31 | P0605 | ECM | Signals Not Normal |
| 32 | P0400 | EGR Function | No EGR Operation |
| 33 | P0130 | Front HO2S | Open/Shorted Circuit/High HO2S Signal |
| 34 | P0325 | Knock Sensor | Open/Shorted Circuit |
| 35 | P1401 | EGR Temperature Sensor | Open/Shorted Circuit |
| 36 | P0402 | EGRC-BPT Valve | Valve Not Operating Correctly |
| 37 | P0130 | Closed Loop Control | System Does Not Enter Closed Loop |
| 41 | P0402 | Intake Air Temp. Sensor | Open/Shorted Circuit |
| 43 | P0120 | Throttle Position Sensor | Open/Shorted Circuit |
| 65 | P0304 | No. 4 Cyl. Misfire | Ignition System |
| 66 | P0303 | No. 3 Cyl. Misfire | Ignition System |
| 67 | P0302 | No. 2 Cyl. Misfire | Ignition System |
| 68 | P0301 | No. 1 Cyl. Misfire | Ignition System |
| 71 | P0300 | Multiple Cyl. Misfire | Ignition System |
| 72 | P0420 | Catalyst Malfunction | Restricted Exhaust |
| 76 | P0170 | Fuel Injector Malfunction | Fuel System Fault |
| 77 | P0136 | Rear HO2S | Open/Shorted Circuit/High HO2S Signal |
| 82 | P0335 | Crankshaft Pos. Sensor | Incorrect Crank Signal |
| 84 | P1605 | A/T Communication Signal | A/T Control Unit Signal Error |
| 91 | P0135 | Front HO2S | Open/Shorted Circuit |
| 95 | P1336 | Crankshaft Position Sensor | Chipped Flywheel Tooth |
| 98 | P0125 | Engine Coolant Temperature Sensor | Faulty Sensor |
| 103 | P0705 | Park/Neutral Position Switch | Open/Shorted Circuit/ Faulty Switch |
| 105 | P1400 | EGRC Solenoid | Open/Shorted Circuit/ Faulty Solenoid |
| ..... | P0600 | A/T Control | Open/Shorted Circuit/Harness or Connectors |