15 Honda diagnostic codes on file. Each shows the symptom for free — unlock the full diagnosis, repair steps, and field insights with a free account.
| Code | System | Symptom | Fix |
|---|---|---|---|
| 12 Blinks | Fuel System | Engine Won't Start | Unlock |
| 21 Blinks | Emissions | Engine Runs Normal / MIL On | Unlock |
| 54 Blinks | Safety | Engine Starts then Stops | Unlock |
| 7 Blinks | Cooling | Overheat Light / Hard Start | Unlock |
| 8 Blinks | Intake | Poor Throttle Response | Unlock |
| B1232 | Antenna / Keyless | Keyless Push-Button Start Inop | Unlock |
| B12A5 | Climate Control (HVAC) | AC Only Blows Out Defrost Vents | Unlock |
| B12C1 | Fuel System | Fuel Gauge Flashing | Unlock |
| Code 12 | Cranking | No Start / Silent Start | Unlock |
| P0107 | Air Intake | Bogging / Black Smoke | Unlock |
| P0219 | Valvetrain | MIL On / Hard Cut at Cruise | Unlock |
| P0505 | Air Intake | Stalling at Stop | Unlock |
| P219A | Fuel System | Rough Idle / Rich Smell | Unlock |
| P219A | Fuel System | Rough Shaking Idle / Intermittent Surge | Unlock |
| Service Light Indicator | — | — | Unlock |
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