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2019
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Sienna SE, AWD
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Repair and Diagnosis
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Different car
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Section 13 (Engine Control System [2GR-FE] - Diagnostic Codes (3 Of 3) & Circuit Tests)
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SFI System
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DTC U0101: Lost Communication with TCM [12/2015 - 08/2016]
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Typical Enabling Conditions
Typical Enabling Conditions
WARNING:
This page is about a different car, the 2016 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.
Monitor runs whenever following DTCs are not present
None
Battery voltage
10.5 V or higher (More than 1 second)
Ignition switch
ON
Starter
OFF