Honda Jazz Mk2 ECU Misfire Repair — P0301 P0302 P0303 | The Vehicle Check
The Honda Jazz Mk2 — the GE generation produced from 2008 to 2015 — is a well-established candidate for ECU-related misfire faults. By the time Mk2 Jazz models reach higher mileage the ECU's internal injector and ignition driver circuits are approaching the end of their reliable service life. Misfire codes P0301 through P0304 in a high-mileage GE Jazz are as likely to be ECU faults as they are to be plugs or injectors. The Vehicle Check repairs Honda Jazz Mk2 ECUs at component level with a full bench test.
Jazz Mk2 ECU Misfire Characteristics
The GE generation Jazz ECU uses a revised circuit layout compared to the Mk1 GD, but the same fundamental driver MOSFET failure mode applies. High mileage, heat cycling and occasional weak battery periods all contribute to driver degradation. Fault codes in Mk2 Jazz ECUs typically start with one cylinder misfire code before spreading to additional cylinders as adjacent drivers on the board begin to fail.
Cold start misfires that clear after a few minutes of running are a particularly strong indicator of thermally sensitive ECU driver failure in the Jazz Mk2.
ECU Repair for Honda Jazz Mk2
We bench test the GE generation ECU using Honda Jazz Mk2 test parameters. Our engineers identify which driver circuits have failed and carry out component-level replacement. All four injector and ignition driver channels are verified after repair.
Your Mk2 Jazz ECU returns repaired with all original vehicle coding intact — no dealer programming required.
Post Your ECU to Us
Send your Honda Jazz Mk2 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.