P0987 Fault Code

Transmission Fluid Pressure Sensor/Switch E Circuit

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

The P0987 fault code indicates an issue with the Transmission Fluid Pressure Sensor/Switch E Circuit. This circuit plays a crucial role in monitoring the pressure of the transmission fluid, which is essential for optimal transmission performance. A fault in this circuit can lead to improper shifting, increased wear, and potential transmission damage.

What are the symptoms of the P0987 code?

• Check Engine Light Activation: The engine light will illuminate to indicate a fault.
• Erratic Shifting: You may experience harsh or delayed shifting of gears.
• Transmission Slippage: The vehicle may slip out of gear due to pressure inconsistencies.
• Poor Acceleration: The vehicle may struggle to accelerate appropriately.

What causes the P0987 code?

• Faulty Transmission Fluid Pressure Sensor: The sensor itself may be malfunctioning or damaged.
• Wiring Issues: Damaged, frayed, or corroded wiring in the circuit can cause communication problems.
• Connector Problems: Loose or corroded connectors can disrupt the electrical signals.
• Transmission Fluid Issues: Low fluid levels or contaminated fluid can affect sensor operation.

How to fix P0987?

• Inspect the Wiring: Check for any visible signs of damage to the wiring harness related to the transmission fluid pressure sensor.
• Test the Sensor: Use a multimeter to measure the resistance and ensure it functions within specified parameters.
• Replace Faulty Components: If the sensor or wiring is faulty, replace them accordingly.
• Check Transmission Fluid: Ensure that the transmission fluid is at the correct level and not contaminated.