P0907
UniversalGate Select Position Circuit High
Medium SeverityThe Powertrain Control Module (PCM) or Transmission Control Module (TCM) has detected an abnormally high voltage signal within the gate select position circuit. This typically indicates an electrical fault, such as a short to voltage, affecting the sensor that monitors the gear selector's physical position, which can lead to improper gear selection or engagement.
⚠️ Before You Begin (Safety First)
Always practice safe automotive repair procedures. Before performing any electrical diagnostic or repair work, disconnect the negative battery terminal to prevent accidental shorts or injury. Allow the engine and exhaust components to cool down before touching them. Use proper jack stands if lifting the vehicle.
Common Symptoms
- Check Engine Light illuminated
- Difficulty shifting gears
- Transmission stuck in a specific gear (limp mode)
- Harsh or erratic shifting
- Vehicle may not start or engage gear
- No reverse gear
Common Causes
- Short to voltage in the gate select position circuit
- Faulty gate select position sensor
- Corroded or damaged wiring and connectors
- Open circuit in the gate select position sensor wiring
- Faulty Transmission Control Module (TCM) or Powertrain Control Module (PCM)
Frequently reported on: General/Universal
Diagnostic Steps
- Connect an OBD-II scanner to confirm the P0907 code and check for any other related codes.
- Visually inspect all wiring and connectors associated with the transmission and shifter mechanism for signs of damage, corrosion, or looseness.
- Locate the gate select position sensor (often part of the transmission range sensor or shifter assembly) and inspect its electrical connector for proper connection and integrity.
- Using a multimeter, test the voltage at the gate select position sensor connector to check for an unexpected high voltage reading, indicating a short to power.
- If possible, use a diagnostic scanner with live data capabilities to monitor the gate select position sensor's readings while moving the shifter, looking for erratic or incorrect voltage signals.
👨🔧 When to Call a Professional
If basic checks like wiring inspection and sensor voltage tests do not resolve the P0907 code, or if the vehicle exhibits severe transmission performance issues such as being stuck in gear or failing to engage gears, consult a professional transmission technician. Advanced diagnostics may be required to pinpoint internal transmission control module or complex wiring harness issues.
Commonly Asked Questions
What does P0907 mean for my car?
P0907 indicates that your car's computer detected a higher than expected voltage signal in the circuit for the gate select position sensor, which monitors your gear selector's position. This often points to an electrical problem.
Is it safe to drive with a P0907 code?
It is generally not recommended to drive with a P0907 code, especially if you are experiencing significant shifting problems or if the vehicle is in limp mode, as this can lead to further damage to the transmission or compromise vehicle control.
What is the most common cause of P0907?
The most common causes for P0907 are wiring issues such as a short to voltage, corrosion in the connectors, or a faulty gate select position sensor itself. Less commonly, it could be a problem with the transmission control module.
How do I clear a P0907 code?
After performing repairs, the P0907 code can be cleared using an OBD-II scanner. If the underlying issue is resolved, the code should not return. If it does, further diagnosis is needed.
Where is the gate select position sensor located?
The gate select position sensor is typically located near or on the transmission, often integrated into the transmission range sensor or the shift lever assembly, depending on the vehicle's make and model.