In every car's life, over there comes a time once the dreaded "check engine" irradiate appears. No to fear. Over there are countless resources you deserve to use come check and diagnose these DTCs (diagnostic problem codes).

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For 1992-1995 (OBD1) vehicles you can inspect these yourself by using the technique shown in the photo below.

Location that OBD1 Honda Diagnostic Connector


How to read the Code

In OBD1 Hondas and also Acuras over there is a diagnostic port and also a two-pin connector located under the passenger-side dashboard. When checking the DTCs you will have to insert a jumper cable from one pin to the various other in the two-pin connector. If you don't have actually a piece of wire around, the is also common to see civilization using paperclips to "jump" the two sides of the connector.

Once you have "jumped" the two-pin connector, you now must insert the crucial and turn on the vehicle. Your examine engine light will then start to flash. Every long flash is a digit in the "tens" place in the code, and a quick flash is a number in the "ones" place. So, if you check out two lengthy flashes and also five quick flashes, you have a code 25. There will certainly be a lengthy pause between codes. Check out all the codes until they begin to repeat themselves. Then refer to the table below to acquire the an interpretation of every code.

For 1996 and also Newer Vehicles

For 1996 and newer (OBD2) vehicles, you can visit a neighborhood auto components supplier, together as development Auto Parts, the offers complimentary vehicle diagnostics. Most of these free services are limited to OBD2 vehicles and also will offer you an prompt explanation the what the password is. As always, it's a good idea to compose these codes down and do a tiny search virtual to watch what various other owners have actually run into when receiving the exact same codes.

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The Most common Honda and also Acura OBD1 Codes


Codes 0 and 11

Electronic regulate module (ECM)

Code 1

Heated oxygen sensor A

Code 2

Oxygen content B

Codes 3 and also 5

Manifold pure pressure

Code 4

Crank place sensor

Code 6

Engine coolant temperature

Code 7

Throttle position sensor

Code 8

Top dead center sensor

Code 9

No.1 cylinder place sensor

Code 10

Intake waiting temperature sensor

Code 12

Exhaust recirculation system

Code 13

Barometric press sensor

Code 14

Idle air control valve or poor ECM

Code 15

Ignition output signal

Code 16

Fuel Injector

Code 17

Vehicle rate sensor

Code 19

A/T lock-up manage solenoid

Code 20

Electric load detector

Code 21

V-TEC control solenoid

Code 22

V-TEC pressure solenoid

Code 23

Knock sensor

Code 30

A/T FI signal A

Code 30

A/T FI signal B

Code 41

Heated oxygen sensor heater

Code 43

Fuel it is provided system

Code 45

Fuel supply metering

Code 48

Heated oxygen sensor

Code 61

Front boil oxygen sensor

Code 63

Rear cook oxygen sensor

Code 65

Rear heated oxygen sensor heater

Code 67

Catalytic converter system

Code 70

Automatic transaxle

Code 71

Misfire recognize cylinder 1

Code 72

Misfire detected cylinder 2

Code 73

Misfire recognize cylinder 3

Code 74

Misfire detected cylinder 4

Code 75

Misfire detect cylinder 5

Code 76

Misfire recognize cylinder 6

Code 80

Exhaust recirculation system

Code 86

Coolant temperature

Code 92

Evaporative emission regulate system

This write-up is accurate and true come the ideal of the author’s knowledge. Content is for informational or entertainment functions only and also does not substitute for personal counsel or professional advice in business, financial, legal, or technical matters.