Diagnostic Code Entered On: Wed Oct 06, 2010 11:00 pm
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Diagnostic Trouble Code Description:
Exhaust Gas Temperature Sensor 2 Circuit
Possible Sensor Faults
ECM
Possible Related Diagnostic Trouble Codes
DTC P0544 or P2031
Circuit / System Description
The exhaust gas temperature sensors are variable resistors that measures the temperature of the exhaust gas. The exhaust gas temperature sensor?1 is located in the exhaust pipe after the catalytic convertor. The exhaust gas temperature sensor?2 sensor is located in the exhaust gas particulate filter. The engine control module (ECM) supplies 5?V to the exhaust gas temperature sensors signal circuit and supplies a ground to the low reference circuit. The exhaust gas temperature sensors temperature information is used by the ECM during the exhaust gas particulate filter cleaning process.
