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What causes a P0299 underboost code in a Chevrolet Cruze?
Documented technician findings and service evidence related to Chevrolet Cruze P0299 underboost faults.
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Joey’s Auto Shop
Expert companyDes Moines, IowaWe had a Chevy Cruze come into our shop, and we found that the P0299 underboost code was caused by a failed wastegate actuator. It prevented the turbocharger from reaching the required boost pressure, and that was the core issue. We wrote about it, and you can read more here.
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