Code result
P0819
Up and Down Shift Switch to Transmission Range Correlation
Moderate severity
What it means
The up-shift/down-shift paddle or button input is used in manumatic mode to step through gears, but the inputs only make sense when the gear lever is in Drive or the Manual position. The TCM detects an inconsistency — paddle commands while gear lever is in Park or Neutral.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Stuck paddle/button input
highOne of the most commonly reported causes for this code — check this first.
Swapped wiring after service
mediumA plausible cause — test and verify before replacing parts.
Related help
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