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Home >> Lexus >> 2021 >> RC F Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Diagnostic Codes (6 Of 9) >> SFI System >> DTC P0505: Idle Control System [09/2014 - 10/2015] >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

Either of the following conditions are met 1 or 2
1. Both of the following conditions are met -
Engine speed - Target engine speed Less than -100 rpm, or higher than 200 rpm (A/C on or NSW on)
Less than -100 rpm, or higher than 150 rpm (A/C off and NSW off)
IAC flow rate learned value 2.37 L/sec. or less, or 11.29 L/sec. or more for 5 seconds or more
2. Both of the following conditions are met A and B
A. Either of the following conditions (a) or (b) is met 5 times or more
(a) Engine speed - Target engine speed Less than -100 rpm, or higher than 200 rpm (A/C on or NSW on)
Less than -100 rpm, or higher than 150 rpm (A/C off and NSW off)
(b) Vehicle condition Stopped after vehicle was driven by 10 km/h (6.25 mph) or higher
B. Either of the following condition is met (c) or (d)
(c) Amount of change of IAC flow rate learning value +2.84 L/sec. or more, or -4.51 L/sec. or less
(d) IAC flow rate learning value 2.37 L/sec. or less, or 11.29 L/sec. or more