Gate Select Position Circuit High
The P0907 code indicates that the transmission control module (TCM) has detected a high voltage condition in the gate select position sensor circuit. This sensor is used in automated manual transmissions (AMT) or dual-clutch transmissions (DCT) to determine the position of the gear selector gate (e.g., Park, Reverse, Neutral, Drive). A high voltage reading suggests a short to power, open circuit, or faulty sensor, which can prevent proper gear selection and cause transmission performance issues.
01. Most Common Causes
- Faulty gate select position sensor
- Short to battery voltage in sensor circuit
- Open or damaged wiring/connectors
- Corrosion or poor electrical connections
- Failed transmission control module (TCM)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Transmission stuck in one gear or fails to shift
- Erratic or no gear selection
- Reduced fuel economy
- Transmission warning message on dashboard
03. Step-by-Step Diagnosis
Step 1: Scan for additional codes and record freeze frame data.
Step 2: Visually inspect the gate select position sensor and wiring for damage, corrosion, or loose connections.
Step 3: Using a multimeter, check the sensor signal voltage at the TCM connector; compare to manufacturer specifications.
Step 4: Test the sensor's resistance and voltage output while manually moving the gear selector.
Step 5: If sensor and wiring are okay, check for TCM software updates or replace TCM if necessary.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive with this code as the transmission may fail to select the correct gear, leading to unsafe driving conditions or transmission damage.
How much does it cost to fix?▼
Repair costs typically range from $150 to $400, depending on whether the sensor, wiring, or TCM needs replacement, and labor rates.