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P0912 OBD2: Gate Select Actuator Circuit Low

P0912 OBD2: Gate Select Actuator Circuit Low

OBD-II Code P0912 indicates a problem with the Gate Select Actuator Circuit in vehicles equipped with manual transmissions. This actuator is responsible for assisting in the gear shifting process.

What Does the P0912 Code Mean?

The P0912 code signifies that the Transmission Control Module (TCM) has detected a low signal from the Gate Select Actuator. This could mean that the actuator is malfunctioning or that there is an issue with the wiring.

What Causes the P0912 Code?

Several factors can trigger the P0912 code, including:

  • Failure of the shift lever assembly
  • Malfunction of the Transmission Control Module (TCM)
  • Wiring issues, such as shorts or disconnections

What Are the Symptoms of the P0912 Code?

Symptoms that may accompany the P0912 code include:

  • Difficulty shifting gears
  • Warning lights on the dashboard
  • Unusual noises from the shift lever area

How Serious Is the P0912 Code?

The P0912 code is classified as urgent. It indicates a significant malfunction that can lead to further damage to the vehicle if not addressed promptly. It can also pose safety risks while driving.

How to Diagnose the P0912 Code

Diagnosing the P0912 code involves:

  1. Using an OBD-II scanner to confirm the code
  2. Inspecting the shift lever assembly and actuator for any visible damage
  3. Checking the TCM and its connections
  4. Testing the wiring for shorts or breaks

Common Repairs for the P0912 Code

Common repairs may include:

  • Replacing the shift lever assembly
  • Repairing or replacing damaged wiring
  • Replacing the Transmission Control Module (TCM)

How Much Does It Cost to Fix the P0912 Code?

Repair costs for the P0912 code can vary widely based on the specific issue. Generally, costs can range from $150 to $1,000, depending on whether you need to replace the actuator, repair wiring, or replace the entire TCM.

Can I Fix the P0912 Code Myself?

While some minor repairs, like checking and replacing wiring, can be done at home, diagnosing and fixing the P0912 code often requires specialized knowledge and tools. It’s recommended to consult with a professional mechanic for proper diagnosis and repair.

About JC Landry

JC is the Senior Editor at eManualOnline.com, GarageSpot.com, and Drive-My.com, as well as the Webmaster of TheMechanicDoctor.com, only to name a few. He's been a certified Master Mechanic for 15 years, working for various car dealers and specialized repair shops before turning towards blogging about cars and EVs in the hope of helping the next generation of automotive technicians. He also loves cats, Johnny Cash and Subarus.

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