Typical Malfunction Thresholds
WARNING: This page is about a different car, the 2024 Lexus IS 500, 2023 Lexus IS 500, and 2022 Lexus IS 500. However, it is still accessible from the selected car via links, so may be relevant.
| 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 |