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Home >> Lexus >> 2008 >> IS 250 RWD, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 173 (Engine Control System - SFI System Diagnostics (3 Of 4)) >> DTC P0505 Idle Control System Malfunction >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.

Functional Check 

TYPICAL MALFUNCTION THRESHOLDS CHART

Either of following conditions 1 or 2 is met -
1 Frequency that following conditions (a) and (b) are met 5 times or more
(a) Engine RPM - target engine RPM Below -100 rpm, or 200 rpm or more
(b) Vehicle condition Stop after vehicle was driven by 6 25 mph (10 km/h) or more
2 Frequency that following conditions (a) and (b) are met Once
(a) Engine RPM - target engine RPM Below -100 rpm, or 200 rpm or more
(b) Idle speed control flow rate learning value 2 37 L/sec or less or 10 56 L/sec or more