Typical Enabling Conditions
WARNING: This page is about a different car, the 2025 Lexus NX 350h, 2024 Lexus NX 350h, 2023 Lexus NX 350h, and 2022 Lexus NX 350h. However, it is still accessible from the selected car via links, so may be relevant.
| Monitor runs whenever the following DTCs are not stored | C0573 (Case 2): Accumulator pressure sensor internal malfunction C0573 (Case 3): Accumulator pressure sensor invalid data C0573 (Case 4): Accumulator pressure sensor lost communication C05A1 (Case 1): Servo pressure sensor lost communication C05A1 (Case 2): Servo pressure sensor internal malfunction C05A1 (Case 3): Servo pressure sensor invalid data C05A2: Servo pressure sensor exceeded learning limit C110F: Brake system voltage circuit low C140F: Brake booster motor circuit open C141C (Case 1): Brake booster motor relay output shorted high C141C (Case 2): Brake booster motor freewheeling MOS output shorted high C141C (Case 3 to 10): Brake booster motor gate voltage output functional C141D: Brake booster motor open circuit C141E: Brake booster motor circuit high C1498: Servo pressure sensor voltage circuit low C1499: Servo pressure sensor voltage circuit high C149E: Accumulator pressure sensor voltage circuit low C149F: Accumulator pressure sensor voltage circuit high C14C4: Servo pressure sensor intermittent/erratic C14CA: Brake system voltage open circuit C14D3: Accumulator pressure sensor intermittent/erratic |
| All of the following conditions are met | - |
| Brake booster pressure sensor fail | Not detected |
| Brake booster motor control circuit fail | Not detected |
| ABS/TRAC/VSC | Off |
| Brake booster pressure | 16.2 MPa (165.2 kgf/cm2 , 2349 psi) or more |
| Brake booster motor request | Off |
| Hydraulic used by brake booster | 15 cc (0.9 cu.in.) or more |
| Change of brake booster pressure | Less than 0.12 MPa (1.2 kgf/cm2 , 17 psi) |
| Servo pressure sensor fail | Not detected |