P0919 Fault Code

Gear Shift Position Control Error

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0919 fault code indicates a Gear Shift Position Control Error, which means there is a malfunction in the vehicle's automatic transmission control system. This error typically arises when the transmission control module (TCM) receives erroneous signals about the gear position. The improper functioning of the gear shift may lead to difficulty changing gears, resulting in compromised vehicle performance.

What are the symptoms of the P0919 code?

Common symptoms associated with the P0919 code include:

• Inability to shift into appropriate gears
• Erratic or harsh shifting behavior
• Warning lights on the dashboard, such as the check engine light
• Slipping transmission during acceleration
• Unusual noises from the transmission area
• Poor fuel efficiency due to transmission issues

What causes the P0919 code?

Several issues can trigger the P0919 code, including:

• Faulty transmission position sensor
• Damaged wiring or connectors associated with the transmission
• Software glitches within the TCM
• Mechanical issues within the transmission assembly
• Low transmission fluid levels or contaminated fluid
• Malfunctioning shift solenoids

How to fix P0919?

To resolve the P0919 fault code, consider the following steps:

• Inspect and replace the transmission position sensor if found faulty.
• Check for damaged or corroded wiring and connectors; repair or replace as needed.
• Perform a software update of the TCM if applicable.
• Ensure the transmission fluid is at the proper level and in good condition.
• Examine and service any malfunctioning shift solenoids.
• If mechanical issues are determined, a thorough inspection and repair of the transmission may be necessary.