Diagnosis & Repair
WARNING: This page is about a different car, the 2003 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Using Toyota hand-held tester or scan tool, read FREEZE FRAME data. Freeze frame data records engine conditions when malfunction is detected.
- Using Toyota hand-held tester or scan tool, check for any other DTCs. If only DTC P0505 exists, go to next step. If other DTCs exists, diagnose and repair those DTCs first and then retest.
- Check for any loose or defective PCV valve hose connections. PCV valve is located at front of driver's side valve cover, below oil fill cap. If PCV valve hose connections are okay, go to next step. If PCV valve hose connections are defective, repair or replace components as necessary.
- Ensure engine oil dipstick, oil filler cap, PCV system and all other air induction system components are intact and operating properly. For vacuum or EVAP hose routing, see VACUUM DIAGRAMS article. If problem does not exist, go to next step. If problem exists, repair as necessary.
- Check throttle body and components for ECTS. For testing of systems or components, see BASIC DIAGNOSTIC PROCEDURES - V6 & V8 article or SYSTEM & COMPONENT TESTING - V6 & V8 article. For removal and installation of components, see REMOVAL & INSTALLATION - V6 & V8 article.