P0912 Fault Code

Gate Select Actuator Circuit Low

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

The P0912 fault code indicates a low voltage signal detected in the gate select actuator circuit. This component plays a crucial role in transmitting the correct gear selection information between the transmission and the engine control module (ECM). Ensuring proper function of this circuit is essential for optimal transmission performance.

What are the symptoms of the P0912 code?

Symptoms associated with the P0912 fault code may include:

• Transmission shifting problems, potentially leading to harsh or erratic gear shifts.
• Illuminated check engine light on the dashboard.
• Difficulty in selecting gears or engaging certain functions in the transmission.
• Vehicle may enter limp mode, restricting its speed and performance.

What causes the P0912 code?

Common causes of the P0912 code include:

• Damaged wiring or connectors related to the gate select actuator.
• A malfunctioning gate select actuator itself.
• Issues with the transmission control module (TCM) that may cause improper voltage readings.
• Corrosion or debris in electrical connectors that impacts circuit performance.

How to fix P0912?

To resolve the P0912 fault code, consider the following steps:

• Inspect the wiring and connectors for damage or corrosion, and repair or replace as necessary.
• Test the gate select actuator for proper operation and replace it if it is malfunctioning.
• Check the transmission control module for faults and perform any necessary updates or repairs.
• Clear the fault code and take the vehicle for a test drive to verify resolution of the issue.