P0819
Up and Down Shift Switch to Transmission Range Correlation
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.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: medium
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Common causes
Ordered by how often each turns out to be the cause.
- Stuck paddle/button inputCommon
- Swapped wiring after servicePossible
Parts involved
- Paddle Shifters
- Gear Lever Switch
P0819 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.