P0987 Fault Code

P0987 OBD-II Trouble Code Short Description

Transmission Fluid Pressure Sensor/Switch E Circuit

What does trouble code P0987 mean?

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.

Symptoms

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.

Causes

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.

Possible Solutions

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.