P0874 Fault Code

Transmission Fluid Pressure Sensor/Switch C Circuit Intermittent

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0874 fault code indicates an issue with the Transmission Fluid Pressure Sensor/Switch C Circuit, which is likely to be intermittent. This means that the sensor may not be providing accurate readings to the engine control unit (ECU), affecting the overall performance of the transmission.

• The transmission fluid pressure sensor measures the pressure of the fluid in the transmission, which plays a vital role in the functioning of the vehicle.
• An intermittent fault can lead to erratic transmission behavior, causing delays or surges when shifting gears.

What are the symptoms of the P0874 code?

Symptoms associated with the P0874 code may include:

• Slipping gears or difficulty in shifting.
• Harsh or erratic shifting patterns.
• Transmission overheating due to improper fluid pressure.
• Warning lights on the dashboard, particularly the check engine light.

What causes the P0874 code?

Common causes of a P0874 fault code include:

• Faulty transmission fluid pressure sensor or switch.
• Wiring issues such as short circuits, open circuits, or damaged connectors.
• Low transmission fluid levels or fluid contamination.
• Internal transmission problems affecting pressure consistency.

How to fix P0874?

To address the P0874 fault code, the following steps can be taken:

• Start by diagnosing the transmission fluid pressure sensor or switch for failures and replace it if necessary.
• Inspect wiring and connectors for damage or corrosion and repair or replace as needed.
• Check and ensure proper transmission fluid levels and quality; replace contaminated fluid if required.
• If internal transmission issues are detected, consider consulting a professional for further inspection and repair.