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P0873 Code - Transmission Fluid Pressure Sensor/Switch 'C' Circuit High

- Code Popularity: 17,441 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P0873?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Transmission Fluid Pressure Sensor/Switch 'C'
  • Transmission Fluid Pressure Sensor/Switch 'C' harness is open or shorted
  • Transmission Fluid Pressure Sensor/Switch 'C' circuit poor electrical connection
  • Faulty Powertrain Control Module (PCM)
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How to Fix the DTC P0873?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes









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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0873 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P0873 Description

The 4th clutch pressure switch is located in the hydraulic passage to the 4th clutch. When oil pressure is supplied to the 4th clutch, the switch is grounded, LOW. When oil pressure is not supplied, the switch is open, HI. The PCM receives the signal from the 4th clutch pressure switch to detect the fluid pressure status, in order to reduce the shift shock when shifting into 4th gear, from 3rd to 4th or 5th to 4th. If the 4th clutch pressure switch is ON when the gear ratio is not 4th gear, the PCM determines it is a fault and Diagnostic Trouble Code (DTC) P0872 sets. DTC P0872 is a type C DTC. The Diagnostic Trouble Code (DTC) will set if the 4th clutch pressure switch is ON when the transmission is in 5th gear for 2 seconds or greater.

OBDII Code P0873 - Transmission Fluid Pressure Sensor/Switch 'C' Circuit High - AutoCodes.com
P0873 Code - Transmission Fluid Pressure Sensor/Switch 'C' Circuit High

Need More Information on the Code?

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Information for Specific Makes

  • P0873 Acura 4th Clutch Transmission Fluid Pressure Switch Short Or Stuck OFF  
  • P0873 Buick Transmission Fluid Pressure Switch 3 Circuit High Voltage  📷
  • P0873 Cadillac Transmission Fluid Pressure Switch 3 Circuit High Voltage  📷
  • P0873 Chevrolet Transmission Fluid Pressure Switch 3 Circuit High Voltage  📷
  • P0873 Dodge Transmission Fluid Pressure Sensor/Switch 'C' Circuit High
  • P0873 GMC Transmission Fluid Pressure Switch 3 Circuit High Voltage  📷
  • P0873 Honda 4th Clutch Transmission Fluid Pressure Switch Short Or Stuck OFF  
  • P0873 Pontiac Transmission Fluid Pressure Sensor/Switch 'C' Circuit High
  • P0873 Saturn Transmission Fluid Pressure Sensor/Switch 'C' Circuit High
  • P0873 Toyota Transmission Fluid Pressure Sensor/Switch 'C' Circuit High

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Code P0873 comments

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