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Engine-Codes – Generic – P0872

P0872 Code - Transmission Fluid Pressure Sensor/Switch 'C' Circuit Low

Quick Answer

The OBD-II code P0872 indicates a problem with the Transmission Fluid Pressure Sensor/Switch 'C' Circuit, specifically that the circuit is reading a lower than expected voltage. Common causes include Faulty Transmission Fluid Pressure Sensor/Switch 'C', Wiring issues or loose connections in the circuit, Low transmission fluid levels. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0872 indicates Transmission Fluid Pressure Sensor/Switch 'C' Circuit Low.
Common causes
Common causes include Faulty Transmission Fluid Pressure Sensor/Switch 'C', Wiring issues or loose connections in the circuit, Low transmission fluid levels.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 08, 2024
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Code P0872 Description

The OBD-II code P0872 indicates a problem with the Transmission Fluid Pressure Sensor/Switch 'C' Circuit, specifically that the circuit is reading a lower than expected voltage. This sensor is crucial for monitoring and regulating the fluid pressure within the transmission system. If the pressure sensor detects that the fluid pressure is too low, it can lead to various transmission issues, including shifting problems, slippage, and overall decreased performance.

OBDII Code P0872 - Transmission Fluid Pressure Sensor/Switch 'C' Circuit Low
P0872 Code - Transmission Fluid Pressure Sensor/Switch 'C' Circuit Low

Common Causes of P0872

  1. Faulty Transmission Fluid Pressure Sensor/Switch 'C'
  2. Wiring issues or loose connections in the circuit
  3. Low transmission fluid levels
  4. Malfunctioning ECM
  5. Internal transmission damage or wear

Symptoms of P0872

  1. Erratic shifting patterns
  2. Transmission slipping between gears
  3. Decreased fuel efficiency
  4. Check Engine Light illuminated
  5. Harsh shifting or delays in shifting

How to Fix P0872

  1. Begin by checking the transmission fluid level and condition. If low, top off with the manufacturer's recommended fluid.
  2. Inspect the wiring and connections related to the Transmission Fluid Pressure Sensor/Switch 'C'. Repair or replace any damaged wires or connectors.
  3. Test the sensor itself using a multimeter to ensure it is functioning correctly. Replace if necessary.
  4. Reset the OBD-II system and clear the error codes to see if the issue persists.
  5. If the problem persists, consult a professional mechanic or transmission specialist for further diagnosis and potential internal transmission repairs.

Cost to Fix P0872

The cost of repairing a Transmission Fluid Pressure Sensor/Switch 'C' Circuit Low issue can vary depending on the specific cause of the problem. On average, the cost of replacing the sensor itself can range from $100 to $300, including parts and labor. However, if the issue is related to wiring or internal transmission damage, the cost can increase significantly. Additionally, the specific diagnosis time and labor rates at auto repair shops can vary, so it's recommended to obtain quotes from local shops for a more accurate estimate.

What does this mean?

Tech Notes for P0872









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Code P0872 Information for Specific Makes

  • P0872 Acura — 4th Clutch Transmission Fluid Pressure Switch Short Or Stuck ON
  • P0872 Buick — Transmission Fluid Pressure Switch 3 Circuit Low Voltage
  • P0872 Cadillac — Transmission Fluid Pressure Switch 3 Circuit Low Voltage
  • P0872 Chevrolet — Transmission Fluid Pressure Switch 3 Circuit Low Voltage
  • P0872 Dodge — Transmission Fluid Pressure Sensor/Switch 'C' Circuit Low
  • P0872 GMC — Transmission Fluid Pressure Switch 3 Circuit Low Voltage
  • P0872 Honda — 4th Clutch Transmission Fluid Pressure Switch Short Or Stuck ON
  • P0872 Pontiac — Transmission Fluid Pressure Sensor/Switch 'C' Circuit Low
  • P0872 Saturn — Transmission Fluid Pressure Sensor/Switch 'C' Circuit Low
  • P0872 Toyota — Transmission Fluid Pressure Sensor/Switch 'C' Circuit Low
About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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