The Dreaded "Check Engine" Light

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

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

Location of OBD1 Honda Diagnostic Connector


How to review the Code

In OBD1 Hondas and Acuras there is a diagnostic port and a two-pin connector situated under the passenger-side dashboard. Once checking the DTCs girlfriend will have to insert a jumper wire from one pen to the other in the two-pin connector. If girlfriend don't have actually a piece of wire around, that is likewise common come see people using paperclips to "jump" the two sides of the connector.

Once you have "jumped" the two-pin connector, friend now must insert the vital and turn on the vehicle. Your check engine light will certainly then begin to flash. Every long flash is a number in the "tens" ar in the code, and a brief flash is a number in the "ones" place. So, if you watch two long flashes and also five quick flashes, you have actually a code 25. There will certainly be a long pause between codes. Read all the codes until they begin to repeat themselves. Then refer to the table listed below to obtain the definition of every code.

For 1996 and Newer Vehicles

For 1996 and also newer (OBD2) vehicles, you can visit a local auto components supplier, such as development Auto Parts, that offers totally free vehicle diagnostics. Many of these complimentary services are restricted to OBD2 vehicles and will offer you an instant explanation that what the code is. As always, it's a great idea to compose these codes down and do a little search online to check out what other owners have run into when receiving the exact same codes.

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The Most typical Honda and also Acura OBD1 Codes


Codes 0 and 11

Electronic regulate module (ECM)

Code 1

Heated oxygen sensor A

Code 2

Oxygen contents B

Codes 3 and 5

Manifold pure pressure

Code 4

Crank position sensor

Code 6

Engine coolant temperature

Code 7

Throttle position sensor

Code 8

Top dead center sensor

Code 9

No.1 cylinder position sensor

Code 10

Intake air temperature sensor

Code 12

Exhaust recirculation system

Code 13

Barometric pressure sensor

Code 14

Idle air regulate valve or negative ECM

Code 15

Ignition calculation signal

Code 16

Fuel Injector

Code 17

Vehicle rate sensor

Code 19

A/T lock-up control solenoid

Code 20

Electric load detector

Code 21

V-TEC regulate solenoid

Code 22

V-TEC push 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 cook oxygen sensor

Code 63

Rear cook oxygen sensor

Code 65

Rear cook oxygen sensor heater

Code 67

Catalytic converter system

Code 70

Automatic transaxle

Code 71

Misfire detect cylinder 1

Code 72

Misfire detected cylinder 2

Code 73

Misfire detect cylinder 3

Code 74

Misfire detect cylinder 4

Code 75

Misfire detect cylinder 5

Code 76

Misfire detected cylinder 6

Code 80

Exhaust recirculation system

Code 86

Coolant temperature

Code 92

Evaporative emission control system

This short article is accurate and true to the finest of the author’s knowledge. Content is because that informational or entertainment functions only and also does no substitute for personal counsel or skilled advice in business, financial, legal, or technical matters.