Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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EGR Temperature Sensor: Testing and Inspection

EGR Gas Temperature Sensor Schematic:





A faulty EGR gas temperature sensor will set code 55 in the on-board diagnostic system. Refer to the schematic diagram and test the sensor with the diagnostic chart.

Wire color code identification:

L: Blue
B: Black
Y: Yellow
G: Green
R: Red
W: White
Br: Brown
Lg: Light green
Gr: Gray

EGR Gas Temperature Sensor Diagnostic Chart (a):




EGR Gas Temperature Sensor Diagnostic Chart (b):





EGR GAS TEMPERATURE SENSOR DIAGNOSTIC CHART