Typical Enabling Conditions
WARNING: This page is about a different car, the 2025 Lexus NX 350, 2024 Lexus NX 350, 2023 Lexus NX 350, and 2022 Lexus NX 350. However, it is still accessible from the selected car via links, so may be relevant.
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| Monitor runs whenever the following DTCs are not stored | P0010 (VVT oil control solenoid) P0011 (VVT system - advance) P0012 (VVT system - retard) P0013 (Exhaust VVT oil control solenoid) P0014 (Exhaust VVT system - advance) P0015 (Exhaust VVT system - retard) P0016 (VVT system - misalignment) P0017 (Exhaust VVT system - misalignment) P0031, P0032, P101D (Air fuel ratio sensor (sensor 1) heater) P0087, P0088, P0191, P0192, P0193 (Fuel pressure sensor (for high pressure side)) P0101, P0102, P0103 (Mass air flow meter) P0107, P0108 (Manifold absolute pressure) P0112, P0113 (Intake air temperature sensor) P0117, P0118 (Engine coolant temperature sensor) P0121, P0122, P0123, P0222, P0223, P2135 (Throttle position sensor) P014C, P014D, P015A, P015B, P2195, P2196, P2237, P2238, P2239, P2252, P2253 (Air fuel ratio sensor (sensor 1)) P0171, P0172 (Fuel system) P0201, P0202, P0203, P0204, P062D, P21CF, P21D0, P21D1, P21D2 (Fuel injector) P0300 - P0304 (Misfire) P0335, P0337, P0338 (Crankshaft position sensor) P0340, P0342, P0343 (Camshaft position sensor) P0365, P0367, P0368 (Exhaust camshaft position sensor) P0500 (Vehicle speed sensor) P107B, P107C, P107D (Fuel pressure sensor (for low pressure side)) P11EA, P11EC, P11ED, P11EE, P11EF, P219A, P219C, P219D, P219E, P219F (Air-fuel ratio imbalance) P1235 (High pressure fuel pump circuit) |
P0128-00: JUDGMENT BY SIMULATED ENGINE COOLANT TEMPERATURE
| Battery voltage | 11 V or higher |
| Ball valve position sensor fail (P16B6, P16B7) | Not detected |
| Water control valve motor fail (P16B2) | Not detected |
| Water control valve stuck fail (P16B8) | Not detected |
| Water control valve stopper fail (P16B4) | Not detected |
| Either of the following conditions is met | 1 or 2 |
| 1. All of the following conditions are met | (a), (b) and (c) |
| (a) Engine coolant temperature at engine start - Intake air temperature (for mass air flow meter sub-assembly) at engine start | -15 to 7°C (-27 to 12.6°F) |
| (b) Engine coolant temperature at engine start | -10 to 56°C (14 to 133°F) |
| (c) Intake air temperature (for mass air flow meter sub-assembly) at engine start | -10 to 56°C (14 to 133°F) |
| 2. All of the following conditions are met | (d), (e) and (f) |
| (d) Engine coolant temperature at engine start - Intake air temperature (for mass air flow meter sub-assembly) at engine start | Higher than 7°C (12.6°F) |
| (e) Engine coolant temperature at engine start | 56°C (133°F) or less |
| (f) Intake air temperature (for mass air flow meter sub-assembly) at engine start | -10°C (14°F) or higher |
| Accumulated time at vehicle speed of 128 km/h (80 mph) or more | Less than 20 seconds |
P0128-07: JUDGMENT BY ENGINE COOLANT TEMPERATURE CHANGE AT HIGH VEHICLE SPEED
| During that all of the following conditions are met | 15 seconds or more |
| Battery voltage | 11 V or higher |
| Engine coolant temperature at engine start | -10°C (14°F) or higher |
| Intake air temperature at engine start | -10°C (14°F) or higher |
| Vehicle speed | 65 to 128 km/h (40.625 to 80 mph) |