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Home >> Lexus >> 2008 >> IS 250 RWD, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 171 (Engine Control System - SFI System Diagnostics (2 Of 4)) >> DTC P0128 Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) >> Typical Enabling Conditions

Typical Enabling Conditions

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
TYPICAL ENABLING CONDITIONS CHART

Monitor will run whenever these DTCs are not present P0010, P0020 (VVT-iE Bank 1, 2) P0011 (VVT System 1 -Advance)
P0012 (VVT System 1 - Retard)
P0021 (VVT System 2 - Advance)
P0022 (VVT System 2 - Retard)
P0031, P0032, P0051, P0052 (Air fuel ratio sensor heater - Sensor 1)
P0101 - P0103 (Mass airflow meter)
P0112, P0113 (Intake air temperature sensor)
P0115 - P0118 (Engine coolant temperature sensor)
P0125 (Insufficient engine coolant temperature for Closed Loop)
P0171, P0172, P0173, P0174 (Fuel system)
P0300 - P0308 (Misfire)
P0335 (Crankshaft position sensor)
P0340 (VVT sensor)
P0351 - P0358 (Igniter)
P0500 (Vehicle speed sensor)
P2196, P2198 (Air fuel ratio sensor - rationality)
P2237, P2240 (Air fuel ratio sensor - open)
P2A00, P2A03 (Air fuel ratio sensor - slow response)
Battery voltage 11 V or more
Either of the following conditions 1 or 2 is met -
1 All of the following conditions are met -
  • Engine coolant temperature at engine start - Intake air temperature at engine start
-15 to 7°C (-27 to 12 6°F)
  • Engine coolant temperature at engine start
-10 to 56°C (14 to 133°F)
  • Intake air temperature at engine start
-10 to 56°C (14 to 133°F)
2 All of the following conditions are met -
  • Engine coolant temperature at engine start - Intake air temperature at engine start
More than 7°C (12 6°F)
  • Engine coolant temperature at engine start
56°C (132 8°F) or less
  • Intake air temperature at engine start
-10°C (14°F) or more
Accumulated time with 80 mph (128 km/h) or more of vehicle speed Less than 20 seconds