Basic Codes
Check Engine Light or ECM LED |
0 |
Engine Control Module. |
1 |
Heated Oxygen Sensor or Oxygen Sensor. |
2 |
Heated Oxygen Sensor or Oxygen Sensor (Fuel Injection) or
Vehicle Speed Sensor (Carburetor). |
3 |
Manifold Absolute Pressure (MAP) Sensor. |
4 |
Crankshaft Position (CKP) Sensor (Fuel Injection) or Vacuum
Switch (Carburetor). |
5 |
MAP Sensor. |
6 |
Engine Coolant Temperature (ECT) Sensor. |
7 |
Throttle Position Sensor (Fuel Injection), Manual Transmission
Clutch Switch Signal (Carburetor), or Automatic Transmission Shift Position Signal
(Carburetor). |
8 |
Crankshaft Position (CKP) or Top Dead Center (TDC) Sensor
problem (Fuel Injection) or Ignition Coil Signal (Carburetor). |
9 |
No. 1 Cylinder Position Sensor. |
10 |
Intake Air Temperature (IAT) Sensor. |
12 |
EGR System. |
13 |
Barometric Pressure (BARO) Sensor. |
14 |
Idle Air Control (IAC) Valve. |
15 |
Ignition Output Signal. |
16 |
Fuel Injector System. |
17 |
Vehicle Speed Sensor. |
19 |
Lock-Up Solenoid Valve. |
20 |
Electric Load Detector. |
21 |
VTEC Solenoid Valve. |
22 |
VTEC Pressure Switch. |
23 |
Knock Sensor. |
30 |
Automatic Transmission FI Signal A. |
31 |
Automatic Transmission FI Signal B. |
41 |
Heated Oxygen Sensor Heater. |
43 |
Fuel Supply System. |
48 |
Heated Oxygen Sensor. |
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. |