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Electronic Control System Signature, ISX and QSX15 Engines – Cab Thermostat Displays A Fault Code

Symptom Tree  t015

This is symptom tree t015
Cause Correction

Cab temperature sensor is malfunctioning if E1 is displayed

Replace the cab thermostat. Refer to the OEM troubleshooting and repair manual for the procedure.
 

Ambient air temperature sensor is malfunctioning if E2 is displayed

Check the ambient air temperature sensor. Refer to Procedure 019-135.
 
Last Modified:  16-Dec-2003
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