Ford is recalling 1,392,935 F-150 pickups from the 2014–2017 model years equipped with the six-speed 6R80 automatic transmission because a degraded transmission lead frame can command an unintended downshift from sixth to second gear.
The recall cites the Transmission Range Sensor (TRS) and its molded lead frame as the failure point: thermal cycling and vibration can degrade electrical connections, producing momentary incorrect TRS signals to the powertrain control module (PCM). An incorrect PCM signal can prompt a sudden downshift that may over-rev the engine and force the drivetrain to match wheel speed, increasing risk of loss of control or damage.
Ford opened an investigation in February and filed the recall with the National Highway Traffic Safety Administration (NHTSA); the recall notice on the NHTSA website identifies the affected vehicles.
This report is based on information originally published by The Autopian.
Read the full article at The Autopian.
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