How Long Does a Transmission Oil Pressure Switch Last?

oil pressure switch

The transmission oil lubricates the different parts in the transmission to ensure they are protected against heat and friction. In addition, the transmission fluid pump creates hydraulic pressure inside of the transmission. The purpose of the transmission oil pressure switch is to read the amount of pressure that is inside of the transmission. This reading is then sent to your vehicle’s computer, which decides if the clutch should be told to shift.

The transmission fluid should be changed every 30,000 to 60,000 miles for both automatic and manual transmission vehicles. The oil pressure switch should be inspected during this time as well as other parts of the transmission to ensure everything is operating properly.

Over time, the transmission oil pressure switch can wear down because of the hard environment it works in. It is subjected to heat and friction on a daily basis, so the switch can become broken, fail, or not read the pressure accurately. Normally, the transmission oil pressure switch will need to be replaced at least once during a vehicle’s lifetime, so if you start to notice symptoms, contact a professional mechanic to further assist you.

If your seal is not working properly and fluid is leaking, this can potentially lead to a large problem. Automatic transmission fluid cleans and conditions the seals, so if it does get too low, the engine will seize up and stop working completely. Before this happens, the vehicle may have a burnt smell to it or you may notice reddish fluid leaking beneath your vehicle. It is important to check your transmission fluid and refill it if need be as soon as you notice these symptoms. Furthermore, the vehicle will then need to be checked out by a mechanic to find the cause of the leak.

Since this part can wear down and need to be replaced over time, it is important to recognize the symptoms it gives off before it completely fails.

Signs your transmission oil pressure switch needs to be replaced include:

  • The vehicle goes into limp mode

  • The transmission will not move into higher gears

  • When the transmission does shift gears, it is harsh and not smooth

  • The Check Engine Light is on

Have a certified mechanic replace the failing transmission oil pressure switch to eliminate any further problems with your vehicle.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

More related articles

How to Find the Keyless Code on a Ford Explorer or Mercury Mountaineer
Many Ford Explorers and Mercury Mountaineers were manufactured with an option known as the Ford keyless entry keypad. Some models refer to it as SecuriCode as well. It...
P0222 OBD-II Trouble Code: Throttle/Pedal Position Switch/Sensor B Circuit Low Input
P0222 code definition Throttle/Pedal Position Switch/Sensor B Circuit Low Input What the P0222 code means The manufacturer specifies a range of acceptable voltage to be produced from the throttle position...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...

Related questions

Q: Replace a oil pump

Replacing an oil pump involves dropping down the front sub frame and then removing the oil pan. You will need to support the engine and transmission assembly. The important question here is: why are you replacing the pump? ...

Q: Check engine light coming on

Cold weather causes plastic and rubber components to contract. The intake manifold on my truck would expand and contract every winter, setting P0171 and P0174 lean codes. Then finally, this past winter, the manifold cracked. My guess is that you...

Q: How do I switch between the odometer and the trip odometer?

Your odometer tells you how many miles your car has driven. Your trip odometer tracks how many miles you’ve gone since last resetting the trip odometer. You can use the trip odometer to calculate how many miles you’re getting on...