how to fix P0520 oil pressure sensor code in Ford F-150 13th Generation (2015-2020)

Ford F-150 13th Generation (2015-2020)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

Error Code: P0520

3 min read

528 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix P0520 oil pressure sensor code in Ford F-150 (2015-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Error Code

P0520

Affected Component

Engine

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to avoid shorts.
•Allow the engine to cool before performing any maintenance work to avoid burns.

Symptoms

•Check engine light illuminated
•Oil pressure gauge reading unusually low or high
•Engine stalling or rough idling
•Increased engine noise due to insufficient oil pressure
•Warning messages related to oil pressure on the dashboard

Diagnostic Steps

1
Scan the vehicle's computer using an OBD-II scanner to confirm the P0520 code and check for any additional codes.
2
Inspect the engine oil level and condition, ensuring it meets the manufacturer's specifications.
3
Visually inspect the oil pressure sensor and wiring for any signs of damage, corrosion, or loose connections.
4
Test the oil pressure sensor using a multimeter to check for proper resistance values as per the manufacturer’s specifications.
5
Verify the oil pressure using a mechanical gauge to ensure that the oil pressure is within the normal range.
6
Check the vehicle’s ground connections and wiring harness for continuity and shorts.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Wrench set
•Socket set
•Multimeter
•Mechanical oil pressure gauge

Parts Required

•New oil pressure sensor
•Engine oil (if needed for refill)

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Diagnostic Steps

1
Scan the vehicle's computer using an OBD-II scanner to confirm the P0520 code and check for any additional codes.
2
Inspect the engine oil level and condition, ensuring it meets the manufacturer's specifications.
3
Visually inspect the oil pressure sensor and wiring for any signs of damage, corrosion, or loose connections.
4
Test the oil pressure sensor using a multimeter to check for proper resistance values as per the manufacturer’s specifications.
5
Verify the oil pressure using a mechanical gauge to ensure that the oil pressure is within the normal range.
6
Check the vehicle’s ground connections and wiring harness for continuity and shorts.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the battery to prevent electrical shorts.

2. Remove the Oil Pressure Sensor

Locate the oil pressure sensor, typically found near the oil filter.
Use a wrench to disconnect the electrical connector from the sensor.
Carefully unscrew the oil pressure sensor using a socket or wrench.
Note the position and orientation of the sensor for proper installation.

3. Inspect and Replace the Sensor

Compare the old sensor with the new one to ensure compatibility.
If the sensor is damaged, install the new oil pressure sensor by screwing it into place, ensuring it is tight but not over-torqued (usually around 15-20 ft-lbs).
Reconnect the electrical connector securely to the new sensor.

4. Refill and Check Oil Level

If any oil was lost during the replacement, refill the engine oil to the proper level.
Check for leaks around the new sensor.

5. Reconnect Battery and Clear Codes

Reconnect the battery terminals.
Use the OBD-II scanner to clear the P0520 code from the system.