Engine-Codes - Lexus - P0021 Lexus

P0021 Lexus Code - Camshaft Position 'A' Timing Over-Advanced or System Performance Bank 2

- Code Popularity: 19,569 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
ChatAC AutoCodes.com AI Chat

What are the Possible Causes of the DTC P0021 Lexus?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Dirty Oil
  • Faulty variable valve timing (VVT)
  • Variable Valve Timing (VVT) circuit is open or shorted
  • Oil Control Valve (OCV) circuit is open or shorted
  • Faulty oil control valve (OCV)
  • Damaged Engine Control Module (ECM)

Code Tech Notes

If the engine oil is clean and the VVT and OCV circuits are OK, replaced the VVT to resolve the problem.

⚠ Does your Lexus have Safety Recalls? → Check here

How to Fix the DTC P0021 Lexus?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Search for P0021 Lexus Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P0021 Lexus code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

When is the Code Detected?

After the ECM sends the target duty cycle signal to the OCV, the ECM monitors the OCV current to establish an actual duty cycle. The ECM determines the existence of a malfunction and sets the DTC when the actual duty cycle ratio varies from the target duty cycle ratio.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Lack/Loss of power
  • Engine rough idle

What Does the P0021 Lexus Code Mean?

The Engine Control Module (ECM) controls the Oil Control Valve (OCV) to regulate the intake camshaft angle. As a result of the angle change, the engine timing is advance or retard. Optimizing engine timing will help the engine improve torque and fuel economy, and the exhaust emissions decrease under overall driving conditions. The Variable Valve Timing (VVT) system includes the Oil Control Valve (OCV) and VVT controller. The ECM detects the actual intake valve timing using signals from the camshaft and crankshaft position sensors, and performs feedback control.

P0021 Lexus Code - Camshaft Position 'A' Timing Over-Advanced or System Performance Bank 2

Need more Information on the Code?

Need more information on how to fix the P0021 Lexus code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0021 Lexus code diagnosed by a professional: Find a repair shop in your area