Honda 95 & Earlier OBD1 Trouble Code Info

Diagnostic Trouble Code Identification

LED, MIL & Check Engine Lamp Flash

0

Engine Control Module

1

HO2S Or O2S

2

HO2S Or O2S{2}

VSS{1}

3

MAP Sensor

4

CKP Sensor{2}

Vacuum Switch{1}

5

MAP Sensor

6

ECT Sensor

7

TP Sensor{2}

M/T Clutch Switch Signal{1}

A/T Shift Position Signal{1}

8

TDC{2}

Ignition Coil Signal{1}

9

No. 1 Cylinder Position Sensor

10

IAT Sensor

12

EGR System

13

BARO Sensor

14

IAC Valve{2}

EACV{1}

15

Ignition Output Signal

16

Fuel Injector System

17

VSS

19

Lock-Up Solenoid Valve

20

Electric Load Detector

21

VTEC Solenoid Valve

22

VTEC Pressure Switch

23

KS

30

A/T FI Signal A

31

A/T FI Signal B

41

HO2S Heater

43

Fuel Supply System

48

HO2S{3}

{1}PGM-CARB.
{2}PGM-FI four cylinder engines.
{3}D5Z1 engine except California.