How To Replace A Transmission Fluid Pressure Switch P0847 / P0848 / P0872 / P0873

How to replace a transmission fluid pressure switch. This specific switch is the 4th clutch pressure switch from a 2006 Acura TL.

Symptoms of a bad switch:
- Harsh shifting
- Transmission won't upshift
- Fail safe mode

This oil pressure switch reads the amount of fluid pressure and relays that info to the vehicle's computer. This allows the computer to control the shifting. (One of the many mechanisms involved.)

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P0847 - 3rd Clutch Transmission Fluid Pressure Switch Short or Stuck On
P0848 - 3rd Clutch Transmission Fluid Pressure Switch Open or Stuck Off
P0872 - 4th Clutch Transmission Fluid Pressure Switch Short or Stuck On
P0873 - 4th Clutch Transmission Fluid Pressure Switch Short or Stuck Off

Note:
Any attempt to repair automotive parts and/or systems carries risk of personal injury. Always adhere and follow safe practices when working on vehicles. Such as, safety glasses, jack stands, no loose clothing, etc. No guarantee or warranty is implied. Use the information in this video at your own risk. Carsntoys is an Amazon Influencer Member.

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Harsh shifting? Vehicle doesn't upshift? Fail safe mode? Transmission fluid pressure switch trouble code? It's a simple replacement.

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