how to fix P0021 code in Ford Explorer Fifth Generation (2011-2019)

Learn how to diagnose and fix P0021 engine VVT issues in Ford Explorer (2011-2019). Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather required tools and parts.
• Disconnect the battery to ensure safety during repairs.
• Allow the engine to cool down before starting work.

2. Inspect and Replace the VVT Solenoid

• Tools Required: Socket set, torque wrench, oil catch pan.
• Remove the engine cover (if applicable) by unscrewing the bolts.
• Locate the VVT solenoid on the engine.
• Disconnect the electrical connector from the VVT solenoid.
• Remove the solenoid by unscrewing the mounting bolts; use the oil catch pan to catch any leaking oil.
• Install the new VVT solenoid by reversing the removal steps and torque the bolts to the manufacturer's specifications (typically around 89 in-lbs).

3. Check and Replace Engine Oil

• Tools Required: Oil filter wrench, oil drain pan, funnel, new engine oil, and filter.
• Drain the old engine oil using the oil drain pan.
• Replace the oil filter to prevent contamination.
• Refill the engine with the appropriate type and amount of oil as specified in the owner’s manual (usually 5W-20 or 5W-30).

4. Inspect Timing Chain/Belt

• Tools Required: Timing tool kit, socket set.
• Remove any components obstructing access to the timing chain/belt (e.g., front cover).
• Inspect the timing chain/belt for wear, slack, and alignment.
• If damaged, replace the timing chain/belt following manufacturer specifications.

5. Clear Codes and Test Drive

• Reconnect the battery and use an OBD-II scanner to clear the P0021 code.
• Test drive the vehicle to verify that the check engine light does not return.