P0907 Fault Code

Gate Select Position Circuit High

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

The P0907 fault code indicates an issue with the Gate Select Position Circuit being too high. This circuit is crucial for determining the gear selection in automatic transmission systems. When this code is triggered, it means the voltage signal from the gate select position sensor is above the expected range, potentially affecting the vehicle's shifting performance.

• Importance: This code could lead to improper gear selection, resulting in poor vehicle performance.
• Affected Systems: Primarily affects the transmission control module (TCM) and may influence engine performance as well.

What are the symptoms of the P0907 code?

When the P0907 code is present, drivers may experience:

• Erratic or delayed shifting of the transmission.
• In certain cases, the vehicle may enter 'limp mode,' restricting performance to prevent damage.
• Dashboard warning lights related to transmission issues may illuminate, such as the check engine light.

What causes the P0907 code?

Several factors can cause the P0907 fault code, including:

• A malfunctioning gate select position sensor that sends incorrect voltage readings.
• Damaged wiring or connectors in the gate select position circuit.
• Issues with the transmission control module (TCM), such as software faults or internal failures.
• Environmental factors like corrosion or moisture affecting sensor connectivity.

How to fix P0907?

To resolve the P0907 code, consider the following steps:

• Inspect the gate select position sensor and related wiring for damage or corrosion, and repair as necessary.
• Test the sensor's voltage output to ensure it is within acceptable limits. Replace the sensor if faulty.
• Examine the transmission control module for possible software updates or faults.
• Clear the fault code using a diagnostic scanner and check if it reappears after repairs.