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Help with error code 17834

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Hi guys,

I've reached a dead end with this code - 17834 P1426 Tank Ventilation Valve - Open Circuit A. I've done some research and replaced the EVAP purge valve and the fuel pump relay - when I clear the code it'll reappear 15-20 miles later (although this can be shorter). I've not experienced any significant juddering or acceleration issues; the car was sat around for a few months awaiting bodywork repairs though.

Anyone able to offer any other options? Cheers

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