P1386 Ford Error Code: Excessive Variable Camshaft Timing Advance, Bank 2

Possible Causes

1. VCT (Variable Camshaft Timing) Solenoid Failure: The solenoid that regulates variable camshaft timing may be faulty, preventing the system from functioning properly.
2. Oil Pressure Issue: Insufficient oil pressure or poor-quality oil can hinder the proper operation of the Variable Camshaft Timing (VCT) system, leading to incorrect timing adjustment.
3. Timing Mechanism Blockage: A faulty or seized variable camshaft timing mechanism can cause excessive timing adjustment, resulting in over-advance.
4. Electrical or Wiring Problems: Damaged wires or corroded connectors may prevent the VCT solenoid from receiving the correct signal from the Engine Control Module (ECU).
5. Camshaft or Timing System Issue: A faulty or improperly adjusted camshaft can affect the variable timing system and cause excessive advance.

Problem Description

The P1386 code on a Ford vehicle indicates that the Variable Camshaft Timing (VCT) system has adjusted the camshaft on Bank 2 to an excessively advanced position beyond the manufacturer’s specifications. Variable Camshaft Timing (VCT) adjusts ignition timing and valve opening duration to optimize performance, fuel consumption, and emissions.

If the timing is too advanced, it can result in power loss, reduced performance, and increased emissions. This code may also be caused by a VCT solenoid failure, an oil pressure issue, or a malfunction in the timing mechanism itself.

How to Fix Ford Code P1386?

1. Check the VCT Solenoid: Inspect the Bank 2 VCT solenoid to ensure it is functioning correctly. If faulty, it should be replaced.
2. Check Oil Pressure and Engine Oil: Ensure oil pressure is adequate and the engine oil is clean and of good quality. If necessary, perform an oil change and replace the oil filter.
3. Check the Timing Mechanism: Inspect the camshaft timing mechanism for any blockages or wear. A faulty mechanism will need to be repaired or replaced.
4. Check Wiring and Connectors: Examine the electrical wiring and connectors of the VCT solenoid for damage, corrosion, or poor connections. Repair or replace any damaged connectors.
5. Check the Camshaft and Timing System: If the camshaft or timing system is improperly adjusted or faulty, adjustment or replacement may be required.

Possible Symptoms

• Check Engine Light On (or engine warning light)
• Engine Power Loss or poor acceleration
• Unusual Vibrations or engine noises
• Increased Fuel Consumption due to improper timing management
• High Pollutant Emissions due to incorrect camshaft timing

Additional Tips

Thorough Diagnosis: If the code persists after repair, it may be helpful to perform a more in-depth diagnosis to check the Engine Control Module (ECU) and its parameters.

Error Code Reset: After fixing the issue, it is essential to reset the error code using an OBD2 diagnostic tool to verify if the problem is resolved.