Honda OBD1 Trouble Codes
The following trouble codes are specific to Honda. You may also see Acura trouble codes, since Honda and Acura are of the same parent company.
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| Code(s) | Description |
|---|---|
| 0 and 11 | Electronic control module (ECM) |
| 1 | Heated oxygen sensor A |
| 2 | Oxygen content B |
| 3 and 5 | Manifold absolute pressure |
| 4 | Crank position sensor |
| 6 | Engine coolant temperature |
| 7 | Throttle position sensor |
| 8 | Top dead center sensor |
| 9 | No.1 cylinder position sensor |
| 10 | Intake air temperature sensor |
| 12 | Exhaust recirculation system |
| 13 | Barometric pressure sensor |
| 14 | Idle air control valve or bad ECM |
| 15 | Ignition output signal |
| 16 | Fuel Injector |
| 17 | Vehicle speed sensor |
| 19 | A/T lock-up control solenoid |
| 20 | Electric load detector |
| 21 | V-TEC control solenoid |
| 22 | V-TEC pressure solenoid |
| 23 | Knock sensor |
| 30 | A/T FI signal A |
| 30 | A/T FI signal B |
| 41 | Heated oxygen sensor heater |
| 43 | Fuel supply system |
| 45 | Fuel supply metering |
| 48 | Heated oxygen sensor |
| 61 | Front heated oxygen sensor |
| 63 | Rear heated oxygen sensor |
| 65 | Rear heated oxygen sensor heater |
| 67 | Catalytic converter system |
| 70 | Automatic transaxle |
| 71 | Misfire detected cylinder 1 |
| 72 | Misfire detected cylinder 2 |
| 73 | Misfire detected cylinder 3 |
| 74 | Misfire detected cylinder 4 |
| 75 | Misfire detected cylinder 5 |
| 76 | Misfire detected cylinder 6 |
| 80 | Exhaust recirculation system |
| 86 | Coolant temperature |
| 92 | Evaporative emission control system |