P0907Generic code

P0907 Code: Gate Select Position Circuit High

The P0907 code means the gate select position sensor signal is above its maximum value. The main effect is that the transmission does not know where its mechanism is. Look for an open circuit, an interrupted ground or a loose connector.

Severity
High
Can I keep driving?
Yes, but with caution
Estimated cost
$60 to $800
Difficulty
Medium
System
Transmission
Applies to
All OBD2 vehicles

Updated Reviewed by Renzo Chacca

On this page

What the P0907 code means

Automated manual transmissions (Opel Easytronic, Fiat Dualogic, Toyota MMT, BMW SMG, Ford Durashift, Volkswagen ASG) and many dual clutch transmissions use electric or hydraulic actuators to disengage the clutch, to choose the gear plane (select) and to engage the gear (shift). The transmission computer watches every actuator with position sensors. The select sensor reports which plane the mechanism is in.

The sensor gets a 5 volt reference and a ground from the computer and sends back a signal between about 0.5 and 4.5 volts. A high signal, which is what the P0907 code reports, is usually caused by an open circuit or an interrupted ground.

If its signal fails, the computer does not know which plane is selected and blocks the shifts. After any repair of these components you must run the transmission relearn procedures with a scan tool (clutch touch point, select and shift positions). Without them the transmission will not work properly.

To confirm the fault, measure the continuity of each wire between the component connector and the computer connector with the key off. It should be under 1 ohm, and an infinite reading means the wire is open. If the wiring is good, measure the component itself. An infinite resistance confirms it is open inside.

P0907 code symptoms

  • Check engine light on.
  • The transmission does not recognize the position of its mechanism.
  • The transmission does not go into gear or stays in neutral.

Likely causes of the P0907 code

  1. Loose or broken connector. The most frequent cause.
  2. Cut signal or ground wire. The signal rises up to the reference voltage.
  3. Sensor open inside. The resistance reads infinite.
  4. Short to 5 volts or 12 volts from rubbing against another wire in the harness.

How to diagnose the P0907 code step by step

  1. Read the sensor value on the scan tool and compare it with what you expect.
  2. Inspect the connector for corrosion, water or loose pins.
  3. Check supply and ground with the key on: the reference should be correct and the ground voltage drop under 0.1 volts.
  4. Measure the signal with the connector attached and see whether it changes with the condition.
  5. Do a wiring wiggle test with the scan tool in graphing mode.
  6. Check the continuity of each wire to the computer (under 1 ohm).
  7. Run the transmission relearn procedures after the repair.

How to fix the P0907 code

  • Repair the connector or the wiring.
  • Replace the sensor if the tests confirm it is bad.
  • Correct the real condition if one exists.
  • Clear the codes and verify with a road test.

Technical reference data

  • 5 volt reference, ground and a signal of 0.5 to 4.5 volts (or a contactless Hall effect sensor).
  • Wire continuity between connectors: below 1 ohm.
  • Approximate values only: check the manufacturer data for your vehicle.

Brand-specific notes

This code is very common on automated manual transmissions. On many hydraulic systems the actuator fluid is a specific type and the reservoir should be checked regularly.

P0907 on Opel

Very common on the Opel Easytronic.

P0907 on Fiat

Very common on the Fiat Dualogic.

P0907 on Toyota

Very common on the Toyota MMT.

P0907 on Smart

Seen on Smart vehicles with an automated manual transmission.

P0907 on BMW

Very common on the BMW SMG.

Frequently asked questions about P0907

Can I drive with a P0907 code?
With caution. The transmission can be left without gears.
Do I have to replace the sensor?
Only if the tests confirm it. The connector and the wiring fail just as often as the sensor does.
What does the gate select position sensor do?
Automated manual transmissions (Opel Easytronic, Fiat Dualogic, Toyota MMT, BMW SMG, Ford Durashift, Volkswagen ASG) and many dual clutch units use electric or hydraulic actuators to release the clutch, select the gear plane and engage the gear. The computer watches each actuator with position sensors. The select sensor reports which plane the mechanism is in.
How much does it cost to fix P0907?
As a rough guide, between $60 and $800. A connector or wire repair is at the low end, and a new sensor with the relearn procedures costs more.
What does the P0907 code mean?
The P0907 code is a generic OBD2 code that means the gate select position sensor signal is above its maximum value.
Will a P0907 code clear itself?
Only if the cause was a temporary glitch. A loose connector or a cut wire will bring it back.
What is the most common cause of P0907?
A loose or broken connector. A cut signal or ground wire and a sensor that is open inside come next.

Related codes

Questions about the P0907 code

There are no questions about this code yet. Tell us about your case: vehicle, symptoms and what you have already checked.