how to fix P0021 code on Ram 1500 DT (2019-Present)

Learn how to diagnose and fix P0021 VVT issue in Ram 1500 DT (2019-Present). Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool completely before starting work.

2. Replace VVT Solenoid

• Tools Required: Socket set, torque wrench, oil catch pan.
• Sub-steps:
  1. Locate the VVT solenoid on the engine.
  2. Remove the electrical connector from the solenoid.
  3. Unbolt the solenoid using the socket set.
  4. Remove the old solenoid and inspect the O-ring for damage.
  5. Install the new VVT solenoid, ensuring the O-ring is properly seated.
  6. Torque the bolts to the manufacturer’s specifications (usually around 89 in-lbs).
  7. Reconnect the electrical connector.

3. Inspect and Replace Engine Oil (if necessary)

• Tools Required: Oil filter wrench, funnel, oil catch pan.
• Sub-steps:
  1. Check the oil level; if low or dirty, proceed to change the oil.
  2. Drain the old engine oil into an oil catch pan.
  3. Replace the oil filter using the oil filter wrench.
  4. Fill the engine with the recommended oil type (typically 5W-20 or 0W-20) through the oil filler cap.
  5. Start the engine and allow it to run for a few minutes, then check for leaks.

4. Inspect Timing Chain/Belt

• Tools Required: Socket set, timing tools (if necessary).
• Sub-steps:
  1. Remove any components obstructing access to the timing cover.
  2. Inspect the timing chain or belt for wear, damage, or misalignment.
  3. If damaged, replace the timing chain/belt according to the manufacturer's service manual.