P0304 Diagnostic Trouble Code Discussion for October 2025
Cylinder 4 Misfire Detected
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| Help Request | Posted | |
| 2010 Honda Odyssey EX 3.5L Misfire, MIL Lamp on VIN: 5FNRL3H41A P0304: misfire cyl 4. replaced plugs and coils, cleaned injectors. unplugged bank 2 O2 and fuel trims went to zero. still misfired. unplugged MAF and cyl's 1&2 stopped misfiring, but #4 still ramps up. no vacuum leaks, fuel is good and good pressure. maybe computer or maybe... |
October 29, 2025 |
