P0874 Transmission Fluid Pressure Sensor Switch C Circuit Intermittent 2

Definition: The OBD-II code P0874 indicates that the Powertrain Control Module (PCM) has detected an intermittent issue with the transmission fluid pressure sensor switch C circuit. This means there is a problem with the electrical circuit or connection related to this specific sensor, which monitors the hydraulic pressure within the transmission.

p0874 – Transmission Fluid Pressure Sensor/Switch C Circuit Intermittent 2

Typical Severity: Moderate

Common Causes

P0874 – Transmission Fluid Pressure Sensor/Switch C Circuit Intermittent 2

Common causes:

• Faulty transmission fluid pressure sensor/switch
• Intermittent electrical connection issues
• Wiring harness problems
• Low transmission fluid level or dirty fluid
• Faulty transmission control module (TCM)

 

Common Misdiagnosis

OBD2 Code: P0874

Description: Transmission Fluid Pressure Sensor/Switch C Circuit Intermittent

Common Misdiagnosis: Replacing the transmission fluid pressure sensor/switch without checking for wiring issues or connector problems.

 

Common Diagnostic Steps

OBD2 Code: P0874

Description: Transmission Fluid Pressure Sensor/Switch C Circuit Intermittent

• Check the transmission fluid level and condition. Ensure it is at the correct level and not contaminated.
• Inspect the wiring and connectors for any signs of damage, corrosion, or loose connections in the transmission fluid pressure sensor circuit.
• Test the transmission fluid pressure sensor using a multimeter to ensure it is functioning correctly.
• Examine the transmission control module (TCM) for any software updates or known issues related to this code.
• If necessary, replace the faulty transmission fluid pressure sensor or repair any damaged wiring/connectors.
• Clear the code and perform a test drive to verify if the issue has been resolved.