PACCAR PX-6 CM2150 (2007-09) Fault Code: 1663 PID: SPN: 3241 FMI: 11 Catalyst Inlet Temperature Sensor Swapped with Outlet – Condition Exists. The inlet and outlet catalyst temperature sensor connections are swapped.
Verify the ECM calibration is correct. Check the calibration revision history found on QuickServe™ Online for applicable fixes to the...
