P0757 OBD-II Trouble Code: Shift Solenoid B Stuck On

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Cost of diagnosing the P0757 code

P0757 is a diagnostic trouble code (DTC) for "Shift Solenoid B Stuck On". 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.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$20.00
Toyota$20.00
BMW$20.00
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P0757 code definition

The PCM has registered an irregularity with shift solenoid B.

What the P0757 code means

Your vehicle’s computer-controlled transmission relies on shift solenoids to manage fluid transferring between hydraulic circuits to trigger a change in transmission to gear ratio. Code P0757 shows up when the PCM senses an abnormality during this process in solenoid B. Varying ratios are necessary in order to speed up and slow down, optimizing fuel efficiency, and maximize engine performance.

What causes the P0757 code?

There are a number of things that could be behind your vehicle reporting a P0757 code. Common reasons are:

What are the symptoms of the P0757 code?

Sometimes there is practically no symptom to alert you to the fact that your vehicle is underperforming. Other drivers will experience very pronounced symptoms, like not being able to shift into or out of any gear.

Harsh shifting is another common symptom as are problems with the transmission like it slipping or even overheating. If your vehicle has a P0757, you’ll most likely notice a drop in fuel efficiency. Finally, the transmission control may drop into “limp-home” mode for as long as this code is being stored.

How does a mechanic diagnose the P0757 code?

Your mechanic will use a scanner to first assess all the codes your vehicle has stored. As long as there aren’t other codes present, they’ll next move on to checking your transmission fluid. If it’s dirty or has somehow been contaminated, this will need to be addressed. If the fluid level is simply low, the mechanic will fill it back up and that may be the end of the problem.

However, if the fluid smells like it’s been burning, this is a sign that the transmission has been operating with an extremely low level of fluid. As a result, internal mechanical damage may be extensive. They’ll need to remove your transmission pan to check for debris (e.g. material from the clutch). Should they find any, a total rebuild will become necessary and the mechanic will need to install a new torque converter.

If no debris is found, they’ll move onto inspecting the wiring and connectors for any damage that may be causing malfunctions. As long as they prove to be fine, the mechanic will need to use a scanner to diagnose and record all the trouble codes stored so they can look for any signs of intermittent problems.

Common mistakes when diagnosing the P0757 code

A lot of mechanics miss that a faulty shift solenoid circuit is behind the P0757 code. As a result, shift solenoid problems get diagnosed instead, leading to unnecessary work that doesn’t really do much about the problem.

How serious is the P0757 code?

Although it may not be considered serious, if the P0757 code represents that you can’t shift gears properly, it’s definitely inconvenient enough that you should get it looked at right away. In those instances where there are no real symptoms, it’s just as important that a mechanic looks at it because you could be doing plenty of damage by continuing to drive your vehicle without knowing it.

What repairs can fix the P0757 code?

Fortunately, fixing a P0757 code only takes one of the following:

Additional comments for consideration regarding the P0757 code

In most cases when the transmission solenoid is stuck, the problem involves foreign materials getting in the way of either the solenoid working properly or fluid flowing through the transmission valve body.

Need help with a P0757 code?

If your vehicle is suffering because of a P0757 code, let YourMechanic help. You can call us at 1-800-701-6230 to speak with one of our service advisors or schedule an appointment on our site. Either way, we’ll provide you with a free quote and then get a certified mobile mechanic to your home or office whenever is most convenient.

trouble codes
P0757
Check Engine Light

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