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TSB Document:

Affected Component: ELECTRICAL SYSTEM:STARTER ASSEMBLY

Summary
Some 2018 F-150, Expedition, and Navigator vehicles may exhibit an illuminated MIL with DTC P0521 stored in powertrain control module (PCM) usually after a crank, no-start event. Refer to Workshop Manual (WSM), Section 303-14 for normal diagnostics. If unable to determine root cause, do not attempt any repairs. Engineering is investigating, monitor OASIS for updates.

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Date Published
FEB 13, 2018
NHTSA TSB #
10136593
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