DTC 051 Cold Blow Time Exceeded

DESCRIPTION

DTC No.	DTC Detection Condition	Trouble Area
051	After the combustion heater is turned on, the temperature of the flame sensor is 90°C (194°F) or more for 600 seconds or more before the heater ignites.	Combustion heater assembly

Before performing the following inspections, attempt to restart the combustion heater assembly. If the combustion heater assembly is successfully started, confirm that DTC 051 is not output. If DTC 051 is not output, finish troubleshooting because it can be concluded that the system has returned to normal operation.

1.REPLACE COMBUSTION HEATER ASSEMBLY

LEXUS IS250, IS220d / GSE20 ALE20