P0907 OBD-II Trouble Code: Gate Select Position Circuit High

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Cost of diagnosing the P0907 code

P0907 is a diagnostic trouble code (DTC) for "Gate Select Position Circuit High". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

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P0907 code definition

The P0907 code is an indication that something has gone wrong with the transmission gate select position circuit. Specifically, that it’s running high. Other codes associated with this one that may occur simultaneously include P0904, P0905, P0906, P0908 and P0909.

What the P0907 code means

This code refers to an issue with your vehicle’s transmission gate. This component is really nothing more than an analog switch. It’s designed to selectively pass or block a signal level from the input to the output. The switch is comprised of an nMOS and pMOS transistor.

The transmission gate is responsible for assisting your vehicle in shifting gears. If a P0907 code is stored, it’s because the circuitry that helps it do its job has sent feedback to the PCM that it’s running high. On most vehicles, a Check Engine Light should come on to make the driver aware of the problem. This isn’t always the case, though. On some vehicles, it takes multiple incidents before the light is activated. On others, there may be no indicator light provided at all.

What causes the P0907 code?

The main reason for a P0907 code has to do with wiring. If it has become frayed, damaged, disconnected or otherwise isn’t working as it should, the gate selection position circuit could suffer in performance.

Another possible culprit could simply be a faulty PCM, but this is pretty rare. Be sure the wires and any other electronic components are inspected thoroughly before proceeding with something like replacing the PCM.

What are the symptoms of the P0907 code?

As the P0907 code relates to problems that have to do with the transmission, it makes sense that the symptoms would involve difficulty driving. You may notice that your ignition struggles to respond when you accelerate, for example. The ignition may also idle out if you’re operating at low RPMs.

How does a mechanic diagnose the P0907 code?

Your mechanic will begin their diagnosis by using an OBD-II scanner to first pull all the codes that have been stored by your vehicle’s PCM. As we mentioned earlier, there are a number of other codes associated with this one, so it shouldn’t come as any surprise that there would be more than one. This also gives the mechanic context for where to start their examination.

However, they’ll almost always go right to inspecting the electrical components of your vehicle, especially the wiring. They’ll look for anywhere where the electrical connection could have been compromised.

The PCM may need to be checked too, but the mechanic will clear all codes and give it a test drive first after the initial inspection to see if the problem was taken care of. In rare cases, your mechanic may look at the fuses too.

Common mistakes when diagnosing the P0907 code

Simply stopping once a frayed wire or loose connector is found could ignore another problem, which is why it’s so important that your mechanic uses the OBD-II scanner and check every possibility behind the issue.

How serious is the P0907 code?

Any time your ignition isn’t running as it should, you’ll want to make repairs a priority. If nothing else, it’s going to be extremely inconvenient to drive, but you may also find that this problem grows into something far worse and more expensive.

What repairs can fix the P0907 code?

Your mechanic will need to do one of the following:

Additional comments for consideration regarding the P0907 code

All the associated codes we listed at the beginning have to do with the same component, but it’s still important to give each one attention. This why the mechanic should clear the codes and do a test drive after every repair to see if any come back and need to be addressed.

Need help with a P0907 code?

YourMechanic can provide you with a certified mobile mechanic to diagnose your vehicle and repair the problems associated with P0907. They’ll even come and meet you wherever is most convenient – your workplace or home. Complete this simple online form for your free quote or just give us a call at 1-800-701-6230 to speak with a service advisor.

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