lemon-mirror
:
Home
>>
Lexus
>>
2007
>>
SC 430
>>
Repair and Diagnosis
>>
Engine Performance
>>
Engine Control System
>>
SFI System
>>
DTC P0128 Thermostat Malfunction
>>
Typical Malfunction Thresholds
Typical Malfunction Thresholds
TYPICAL MALFUNCTION THRESHOLDS
Duration that both of following conditions (a) and (b) met
5 seconds or more
(a) Estimated ECT
75°C (167°F) or higher
(b) ECT sensor output
Lower than 75°C (167°F)