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Home >> Lexus >> 2024 >> RX 500h >> Repair and Diagnosis >> External Pages >> Different car >> Section 25 (Engine Control System - Diagnostic Codes (P0115-P0136)) >> SFI System >> DTC P0115-2A: Engine Coolant Temperature Sensor 1 Signal Stuck in Range [10/2022 - 08/2023] >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

WARNING: This page is about a different car, the 2025 Lexus RX 450h+, 2025 Lexus RX 350h, 2024 Lexus RX 450h+, 2024 Lexus RX 350h, and 2023 Lexus RX 350h. However, it is still accessible from the selected car via links, so may be relevant.
COLD START MONITOR

Engine coolant temperature sensor value change Less than 5°C (9°F)
SOAK MONITOR

Difference between current engine coolant temperature sensor value and previous engine coolant temperature sensor value when engine stopped Less than 5°C (9°F) (Varies with engine coolant temperature of last trip engine stop)
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