P0995 Fault Code

Transmission Fluid Pressure Sensor/Switch F Circuit High

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

The P0995 fault code indicates an issue with the Transmission Fluid Pressure Sensor/Switch F Circuit, specifically that the circuit is registering a high voltage. This can lead to erratic shifts, and in some cases, the vehicle may enter 'limp' mode to protect itself from potential damage. Diagnosing the fault involves checking the sensor and its wiring to ensure proper function.

What are the symptoms of the P0995 code?

Drivers may experience symptoms such as:

• Erratic or harsh shifting of gears
• Transmission slipping or sudden loss of power
• Illumination of the check engine light
• Engaging the limp mode, which restricts performance to prevent further damage
• In some cases, various transmission-related error codes may accompany the P0995.

What causes the P0995 code?

Common causes of the P0995 code include:

• Faulty Transmission Fluid Pressure Sensor
• Damaged wiring or connectors in the sensor circuit
• Low transmission fluid levels
• Internal transmission issues that may affect pressure readings
• A malfunctioning transmission control module (TCM) that processes pressure data.

How to fix P0995?

To resolve the P0995 fault code, follow these steps:

1. Check the transmission fluid level and condition, topping off or replacing it as necessary.
2. Inspect the Transmission Fluid Pressure Sensor and its circuit for any signs of damage or corrosion.
3. Test the sensor for proper output using a multimeter to ensure it operates within factory specifications.
4. Examine the wiring and connectors for loose connections or shorts, repairing or replacing as needed.
5. Reset the check engine light and take the vehicle for a test drive to verify if the issue resurface.
6. If problems persist, consider checking the transmission control module for defects.