Honda and Acura OBD1 "Check Engine Light" Trouble Codes (1992-1995)
The Dreaded "Check Engine" Light
In every car's life, there comes a time when the dreaded "check engine" light appears. Not to fear. There are many resources you can use to check and diagnose these DTCs (diagnostic trouble codes).
For 1992-1995 (OBD1) vehicles you can check these yourself by using the method shown in the picture below.
Location of OBD1 Honda Diagnostic Connector
How to Read the Code
In OBD1 Hondas and Acuras there is a diagnostic port and a two-pin connector located under the passenger-side dashboard. When checking the DTCs you will need to insert a jumper wire from one pin to the other in the two-pin connector. If you don't have a piece of wire around, it is also common to see people using paperclips to "jump" the two sides of the connector.
Read More from AxleAddict
Once you have "jumped" the two-pin connector, you now need to insert the key and turn on the vehicle. Your check engine light will then start to flash. Every long flash is a digit in the "tens" place in the code, and a short flash is a digit in the "ones" place. So, if you see two long flashes and five short flashes, you have a Code 25. There will be a long pause between codes. Read all the codes until they start to repeat themselves. Then refer to the table below to get the meaning of each code.
For 1996 and Newer Vehicles
For 1996 and newer (OBD2) vehicles, you can visit a local auto parts supplier, such as Advance Auto Parts, that offers free vehicle diagnostics. Most of these free services are restricted to OBD2 vehicles and will give you an immediate explanation of what the code is. As always, it's a good idea to write these codes down and do a little search online to see what other owners have run into when receiving the same codes.
The Most Common Honda and Acura OBD1 Codes
| Code | Meaning |
|---|---|
Codes 0 and 11 | Electronic control module (ECM) |
Code 1 | Heated oxygen sensor A |
Code 2 | Oxygen content B |
Codes 3 and 5 | Manifold absolute 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 control valve or bad ECM |
Code 15 | Ignition output signal |
Code 16 | Fuel Injector |
Code 17 | Vehicle speed sensor |
Code 19 | A/T lock-up control 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 supply system |
Code 45 | Fuel supply metering |
Code 48 | Heated oxygen sensor |
Code 61 | Front heated oxygen sensor |
Code 63 | Rear heated oxygen sensor |
Code 65 | Rear heated oxygen sensor heater |
Code 67 | Catalytic converter system |
Code 70 | Automatic transaxle |
Code 71 | Misfire detected cylinder 1 |
Code 72 | Misfire detected cylinder 2 |
Code 73 | Misfire detected cylinder 3 |
Code 74 | Misfire detected cylinder 4 |
Code 75 | Misfire detected cylinder 5 |
Code 76 | Misfire detected cylinder 6 |
Code 80 | Exhaust recirculation system |
Code 86 | Coolant temperature |
Code 92 | Evaporative emission control system |
This article is accurate and true to the best of the author’s knowledge. Content is for informational or entertainment purposes only and does not substitute for personal counsel or professional advice in business, financial, legal, or technical matters.
