Error Code P0919 is defined as Gear Shift Position Control Error. This is a generic trouble code, meaning it applies to all vehicles equipped with the OBD-II system, especially those made since 1996 up to the present. Specifications on the definition, troubleshooting, and repairs, of course, vary from one make and model to another.
The gearshift is the input for the vehicle that allows the driver to control the output of the vehicle’s engine. In the case of Error Code P0919, the powertrain control module (PCM) has determined that the gearshift’s ability to employ shift position has malfunctioned.
- Difficult or inability to shift gears
- Increased fuel consumption
Defective components in the gearbox such as broken, corroded, damaged, or disconnected or wires are the most likely cause for this code. Faulty components could also be caused by misreading the sensor.
In rare cases, it could be due to faulty PCM. But this should be the last thing to consider.
How to Check
To diagnose this code, an OBD-II reader must be connected to the vehicle to verify the fault.
From there, the next that must be checked are the sensors. The sensors that registered the fault must be checked whether they are functional or not. If the sensors turn out to be okay, then inspect related components in the gearshift mechanism.
Inspect all transmission-related circuitry or wiring. Look for signs of corrosion or any damage or disconnection.
How to Fix
- For misreading sensors, the sensors must be repaired or replaced
- Damaged components in the gearshift mechanism must be repaired or replaced
- Repair or replacement of any wiring-related problem
For rare instances where the PCM is at fault, related modules must be reprogrammed as well.
Since this code affects the proper shifting of the vehicle, it must be addressed as soon as possible.
The most common mistake in diagnosing and repairing this code is replacing the gearshift system when the problem is a faulty sensor.
This error code may come with other error codes relating to the PCM sensors or the gearshift system.