Possible Causes:
* Faulty Output Speed Sensor: This is the most likely culprit. The sensor itself may be malfunctioning due to wear, damage, or a short circuit.
* Wiring Harness Issues: Damage to the wiring between the sensor and the transmission control module (TCM) can cause intermittent or constant problems. This could be a broken wire, short circuit, or corrosion.
* Transmission Control Module (TCM) Problem: While less common, a faulty TCM can also cause this code. The TCM interprets the sensor's signal, and a problem with the module itself can misinterpret or fail to receive the signal correctly.
* Low Transmission Fluid: Low fluid level can affect sensor performance and cause erratic readings.
* Internal Transmission Problems: In some cases, P0795 might indicate a more serious issue within the transmission itself, such as a failing clutch pack or other internal component. This is less likely than the other causes.
Troubleshooting Steps:
1. Check Transmission Fluid Level: Ensure the transmission fluid is at the correct level and condition. Low or dirty fluid needs to be addressed first.
2. Inspect Wiring Harness: Carefully examine the wiring harness leading to the output speed sensor for any signs of damage, corrosion, or breaks. Repair or replace any damaged wiring.
3. Test the Output Speed Sensor: This usually requires a scan tool that can perform specific tests on the sensor. A multimeter can also be used to check for continuity and voltage, but a proper scan tool is preferred for accurate diagnosis.
4. Inspect the Sensor for Physical Damage: Check the sensor itself for any physical damage, such as cracks or loose connections.
5. Consider a TCM Scan: If the sensor and wiring check out, the TCM may need to be scanned for internal faults. This typically requires specialized diagnostic equipment.
Important Note: Ignoring this code can lead to further transmission damage. Accurate diagnosis and repair are crucial. It's best to take your Lincoln LS to a qualified mechanic or transmission specialist for proper diagnosis and repair, especially if you're not comfortable working on automotive systems yourself. They have the proper tools and expertise to determine the root cause of the P0795 code.
