Exhaust Gas Temperature 1 — Data Valid but Above Normal Operational Range — Least Severe Level
|Fault Code: 1717
Exhaust Gas Temperature 1 — Data Valid but Above Normal Operational Range — Least Severe Level. High catalyst inlet temperature has been detected.
Possible engine derate.
Circuit: Exhaust Gas Temperature 1
The exhaust gas temperature #1 sensor is used by the electronic control module (ECM) to monitor the engine exhaust temperature entering the catalyst unit. The ECM monitors the voltage on the signal pin and converts this to a temperature value.
The exhaust gas temperature #1 sensor is located in the aftertreatment system. It is located between the turbocharger outlet and the catalyst unit inlet in the exhaust system.
This fault is triggered when the temperature at the catalyst inlet exceeds the maximum allowable temperature for a given engine rating. Leaks in the charge air system or a faulty turbocharger can cause high exhaust gas temperature.
On-Board Diagnostics (OBD) Information:
- The ECM illuminates the appropriate amber or red fault lamp when the diagnostic runs and fails.
- The ECM turns OFF the appropriate fault lamp when the diagnostic runs and passes.