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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 98 (Engine Controls - Self-Diagnostics) >> Diagnostic Tests >> DTC P0171, DTC P0172, DTC P0174 Or DTC P0175 >> Test Drive Confirmation

Test Drive Confirmation

WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

Connect scan tool to Data Link Connector (DLC) No. 3. See Figure. If using Lexus scan tool, switch to CHECK mode. On both scan tools, start and warm engine to normal operating temperature. Allow engine to idle for 120 seconds or more. Drive vehicle at 24 MPH or more for 20 seconds. Stop vehicle and allow to idle for 20 seconds. Repeat driving and idle part of test 2 more times. At last idle test, allow to idle for 20 seconds. If using OBD-II scan tool, turn engine off. Repeat this procedure. If using either scan tool, if malfunction exists, MIL will illuminate.

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