If your car is showing the P0935 engine code, there is a problem with your hydraulic pressure sensor. This issue doesn’t require immediate attention, but you should not be driving much with this code. If left unchecked, it could result in internal damage to the engine.

Diagnostic trouble codes (DTCs) indicate problems with your car engine. Having an OBD-II code reader will allow you to see which codes are active so that you can look up the engine code and evaluate the problem before finding the solution.

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What does the engine code P0935 mean?

Definition: Hydraulic pressure sensor circuit high input

The P0935 engine code indicates a problem with your car’s hydraulic pressure sensor circuit, which is vital for measuring the hydraulic pressure. The code is activated when the Transmission Control Module (TCM) detects that the voltage of the hydraulic pressure sensor circuit is higher than the factory specifications.

How much will it cost to fix?

Running a diagnostic for the P0935 will cost one hour of labor, which will come out to somewhere between $75 to $150 per hour.

The total cost for parts and labor to repair the hydraulic pressure sensor circuit will depend on what needs to be fixed, your vehicle’s make, model, and engine type, and where you go to fix it.

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What can cause the P0935 engine code?

If your car is showing the P0935 engine code, there may be a faulty component in the hydraulic pressure sensor circuit leading to a voltage reading that is higher than the normal limit set by the manufacturer.

The hydraulic pressure sensor circuit is an important component that measures the available hydraulic pressure inside the transmission. It then relays it back to the Engine Control Unit (ECU) to determine how to change gears.

Other potential issues that could cause this engine code include:

Hydraulic Pressure Sensor harness is open or shorted

Hydraulic Pressure Sensor circuit poor electrical connection

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What does the check engine light mean?

Common symptoms of the P0935 engine code

You may not see many symptoms accompanying this engine code other than the

check engine light turning on

. Other potential signs to watch for include:

Lesser acceleration

Abnormally high RPMs at speed

Abnormally hard shifts at lower RPM

Abnormally soft shifts at higher RPM

How serious is the P0935 engine code?

The P0935 engine code isn’t an issue that requires immediate attention, but you should not be driving for too long with the code active. If you leave the problem for too long, you can risk seriously damaging your engine, which would cost even more to fix.

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Does insurance cover a damaged engine?

Can I fix the P0935 engine code myself?

It may be possible to fix the P0935 engine code at home, but you must diagnose the issue correctly before beginning any repairs. Depending on the source of the problem, you may need to:

Replace blown fuses

Replace transmission pressure sensor

Replace or repair damaged wiring or connectors

Replace or reprogram ECU or TCM

Incorrectly performing these fixes could lead to damages and high

car repair

costs. If you’re not sure what repairs your car needs, it’s a good idea to bring it to a professional for a thorough diagnostic inspection and repairs.

Repairing the hydraulic pressure sensor circuit

If you decide to try repairing the P0935 code yourself, you’ll need to follow these steps:

Identify the correct parts that your vehicle will need

Inspect the hydraulic pressure sensor to find what is causing the code

Disconnect the car battery before any repairs

Replace faulty components

MORE:

Does car insurance cover engine failures?

Finding insurance for your vehicle

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