P0907 — Gate Select Position Circuit High

How do I diagnose P0907 myself?

Start with a scan: confirm P0907, save the freeze frame and note any companion codes. Then inspect the wiring and connectors related to the gate select position, and verify the suspect component against live data before buying parts.

What are the symptoms of P0907?

Drivers most often notice: increased fuel consumption in some cases, Check Engine Light on, the affected system operates intermittently or not at all, possible limp mode depending on the affected component.

What is the most common cause of P0907?

The most common causes are: poor ground connection, corroded, loose or damaged connector, blown fuse feeding the circuit.

Is it safe to drive with P0907?

In most cases the car remains drivable, possibly with reduced performance or a disabled auxiliary system. If symptoms include stalling, no-start or brake/steering warnings, treat it as urgent.

Will P0907 clear itself?

Sometimes P0907 clears after a few drive cycles if the fault was intermittent — for example a loose connector or a tank of bad fuel. The underlying cause usually remains, so the code tends to return. Clear it once; if it comes back, diagnose rather than erase it repeatedly.

When your scan tool displays P0907, the engine control unit has detected that a voltage signal on a specific circuit has climbed above its normal operating range. P0907 stands for "Gate Select Position Circuit High," a diagnostic trouble code that falls under the powertrain category — meaning it relates to either the engine, transmission, or the electronics that control them.

The gate select position sensor tracks the driver's selected gear or mode (such as Park, Reverse, Drive, or Sport) and relays that information to the transmission control module. When everything works correctly, this sensor outputs a specific voltage range. When P0907 sets, the module sees something closer to full battery voltage instead of the expected signal. That reading suggests one of three possibilities: the signal wire has shorted to a power source, a ground connection has opened up, or the sensor itself has failed and is pulling the circuit high.

The control unit does not trigger this light from a single bad reading. It requires the fault to repeat under specific driving conditions before it officially logs P0907 and illuminates the Check Engine lamp. This is why the freeze frame data stored alongside the code is so valuable — it captures engine load, RPM, coolant temperature, and vehicle speed at the moment the problem occurred, giving you a roadmap for reproducing the failure during diagnosis.

Common symptoms of P0907

• The Check Engine light remains illuminated after the fault is detected.
• The vehicle may enter a limp-home mode, limiting speed or disabling certain functions.
• Fuel economy can increase noticeably in some vehicles.
• The gate select system operates inconsistently or stops responding entirely.
• The affected circuit's related systems may become unresponsive.
• Shifting feel or electronic gear selection may feel abnormal.

What causes P0907?

• The gate select position sensor itself has failed and is feeding excessive voltage.
• The signal wire is shorted to battery positive somewhere in the harness.
• The ground return path for the sensor has become open or corroded.
• A fuse that supplies power to the circuit has blown.
• The transmission control module's output driver for this circuit has failed internally.
• Wiring insulation has chafed through, allowing a short to power.
• The connector at the sensor or PCM has developed corrosion or backed-out pins.

How to diagnose P0907

1. Plug in an OBD2 scanner and confirm that P0907 is stored in the ECU's memory. Record the freeze frame data — it tells you exactly what engine conditions existed when the fault triggered.
2. Scan for any additional trouble codes. Related codes often point to the root cause, especially if multiple sensors share the same power or ground circuit.
3. Visually examine the wiring harness and connectors associated with the gate select position circuit. Look for melted insulation, broken wires, moisture intrusion, or green corrosion deposits.
4. Disconnect the sensor and probe the harness side with a multimeter. If you still read high voltage with the component unplugged, the wiring itself has a short to power. If the voltage drops to normal, the sensor is the culprit.
5. Check for proper reference voltage and ground at the sensor connector while the circuit is powered up.
6. Perform a wiggle test on the harness while monitoring live data — any signal dropouts indicate an intermittent wire break.
7. After repairs, clear the code and drive the vehicle through a complete drive cycle that replicates the freeze frame conditions. The code should not return.

Repair options and costs for P0907

Start with the least expensive possibilities before committing to major repairs:

• Repair damaged wiring or connectors: $80–$250
• Replace the faulty gate select position sensor or actuator: $150–$500
• Control module diagnosis and repair or replacement: $300–$1,000

How much does it cost to fix P0907?

The total bill hinges entirely on what the root cause turns out to be. Based on typical independent shop labor rates in the United States, you can expect the following ranges. Wiring repairs generally run between $80 and $250, depending on how much harness work is needed. Sensor or actuator replacement typically falls between $150 and $500, with part cost varying by application. If the transmission control module itself is faulty, you are looking at $300 to $1,000 for diagnosis, repair, or replacement plus programming. All told, fixing P0907 usually lands somewhere between $80 and $1,000. Skipping a thorough diagnosis and ordering parts at random is a good way to spend money on components that were not the problem.

Can you drive with P0907?

The severity level for this code is short, meaning most drivers can continue operating the vehicle without immediate danger. In many cases the car remains fully driveable, though it may feel sluggish or have limited gear selection. However, if you experience stalling, failure to start, or warnings affecting brakes and steering, treat the situation as urgent and stop driving immediately.

Related OBD2 codes

• P0900: Clutch Actuator Circuit/Open
• P0901: Clutch Actuator Circuit Range/Performance
• P0902: Clutch Actuator Circuit Low
• P0903: Clutch Actuator Circuit High
• P0904: Gate Select Position Circuit
• P0905: Gate Select Position Circuit Range/Performance