Honda Jazz ECU Cylinder 2 Misfire P0302 — Repair Specialist | The Vehicle Check
A persistent cylinder 2 misfire code P0302 on the Honda Jazz that does not resolve with ignition or injector maintenance points to a failed ECU driver circuit. The Vehicle Check repairs Honda Jazz ECU cylinder 2 driver faults at component level. We identify the exact failed MOSFET or driver IC, replace it and return your original ECU repaired, coded and ready to refit — no dealer programming required.
P0302 and the ECU Driver Circuit
If rotating the coil and plug from cylinder 2 to another cylinder does not move the misfire, and the cylinder 2 injector tests correctly, the ECU is controlling cylinder 2 incorrectly. The driver MOSFET for cylinder 2 has degraded and is no longer reliably triggering the injector or ignition coil on that cylinder.
This fault is common on high-mileage Jazz models and those that have run with a weak battery, as voltage stress accelerates driver MOSFET degradation.
Bench Test and Repair
We apply the Honda Jazz injection cycle to the ECU and monitor all four cylinder outputs. When cylinder 2 shows abnormal or absent output, we identify and replace the specific failed component at board level. A complete four-cylinder post-repair test confirms the result before return.
Your vehicle coding and immobiliser data is preserved throughout.
Post Your ECU to Us
Send your Honda Jazz ECU to The Vehicle Check, Enfield EN3 7PH. We return it repaired in 2 to 3 working days. Call 0203 489 2610.
Send Your Unit Today
The Vehicle Check | Unit 8 Solway Business Centre | Tysoe Street | Enfield | EN3 7PH
📞 0203 489 2610 | 📧 info@thevehiclecheck.co.uk
Nationwide mail-in postal service. All work covered by our repair warranty.