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Can anyone help please? I have replaced the OFS rear speed sensor and half shaft as I had an ABS warning and the diagnostics said that was the problem. It worked well for Two weeks then the ABS light came on again and then the gearbox fault showed on the dash and it was stuck in fourth gear, when placing the car into forward or reverse it made a large clunking noise. The airbag lights then showed, so sent the ECU away to be checked and that is working fine, am now really stumped.