TSB Document:

Affected Component: ENGINE AND ENGINE COOLING:COOLING SYSTEM

Summary
MIL on. DTC P0491 and P0492 (Secondary Air System Insufficient Flow, Bank 1/2) are stored at the same time. Mileage is greater than 15,000 miles. Under certain driving conditions, the secondary air ports in the cylinder head can accumulate carbon over time, causing a restriction.

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Date Published
MAR 29, 2013
NHTSA TSB #
10123886
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