10
ERROR CODES
O2 Sensor Error Code:
Any time after warm-up, you can get a O2 sensor error code
that will be shown with an “E” in the CO window, and a number “800” in the O2/NOX window.
When this error message is displayed, a new O2 sensor needs to be installed. See mainte-
nance for the O2 sensor replacement.
NOX Sensor Error Code:
Any time after warm-up, you can get a NOX sensor error
code that will be shown with an “E” in the CO window, and a number “1000” in the O2/NOX
window. When this error message is displayed, a new NOX sensor needs to be installed. See
maintenance for the O2 sensor replacement.
Optical Bench Error Codes (HC,CO,CO2):
Any time after warm-up, you can get an
error code that will be shown with an “E” in the CO window, and a number “100” in the O2/NOX
window indicates HC out of range, “200” in the O2/NOX window indicates CO out of range,
“400” in the O2/NOX window indictes “CO2” out of range. When this error message is dis-
played, the analyzer MUST be sent to EMS for a bench diagnosis. Please send the unit to 801
N. Harrison St., Algonquin IL. 60102, and indicate in writing what the error code is that oc-
curred.
