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CAN THE COLD WEATHER CAUSE AN UNDERBOOST AN OVERBOOST CODE?

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check engine light on PO299 & PO234 codes on 2003 volkswagen jetta

Vehicle: 2003 volkswagen jetta tdi

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P0299 Turbo underboost

P0234 Turbo overboost

Cold weather cannot creat a underboost and a overboost, A common component problem is the wastegate Bypass regulator valve.

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