What Does P0819 Mean?
The Up and Down Shift Switches do not correlate with the Transmission Range position. The TCM has detected that the manual shift switch inputs (upshift/downshift paddles or buttons) are being received, but they conflict with the current transmission range selector position. For example, manual shift commands are being received while the selector is in Park or while the system is not in manual mode.
Common Causes
30%
Faulty transmission range sensor providing incorrect range position
25%
Stuck or shorted upshift or downshift switch sending false commands
20%
Wiring cross-talk or short between shift switch circuits and range circuit
15%
Misadjusted shift linkage causing range sensor misalignment
10%
TCM software calibration issue
Diagnostic Steps
1
Monitor the transmission range sensor PID and both shift switch PIDs simultaneously while shifting through all ranges — look for disagreements between displayed range and actual position.
2
Check shift switch signals in every selector position — the switches should only show active when the selector is in manual/sport mode.
3
Inspect the shift linkage adjustment by comparing actual selector position to the range sensor reading — misalignment will cause range reporting errors.
4
Test each shift switch individually, checking for stuck contacts or false triggers when the switch is not being pressed.
5
Check for TSBs regarding TCM software updates that may address calibration issues with shift switch correlation logic.
Estimated Repair Cost
$75 - $600
Parts + labor, varies by vehicle and location
The Up and Down Shift Switches do not correlate with the Transmission Range position. The TCM has detected that the manual shift switch inputs (upshift/downshift paddles or buttons) are being received, but they conflict with the current transmission range selector position. For example, manual shift...
The most common cause of P0819 (Up and Down Shift Switch to Transmission Range Correlation) is: Faulty transmission range sensor providing incorrect range position
Typical repair costs for P0819 range from $75 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
The vehicle can be driven in standard automatic mode. Avoid using the manual shift paddles/buttons until the fault is diagnosed. Unexpected gear changes or refusal to shift in manual mode are possible. If the transmission behaves erratically, have it inspected immediately.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0819 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Powertrain
System
Transmission Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
