UltraGauge Screens
Check Engine/Readiness
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Diesel Engine
The readiness tests performed for a Diesel vehicle are different than those for gasoline vehicles.
The readiness status will
continually be read and displayed. As a result, if the ECU is busy running the monitors the status may change in real time.
Pressing any key will halt the readiness reading and exit to the Menu.
For Diesel Vehicles, the following potential readiness test status is presented:
by UltraGauge:
NHMC Catalyst:
Non-Methane Hydrocarbon Converting Catalyst. This monitor ensures the proper
Conversion of Hydrocarbons and Carbon Monoxide
NOx/SCR After treament
Nitrogen Oxide / Selective Catalyst Reduction Catalyst.
This monitor ensures proper NOx conversion. A NOx sensor measures the NOx concentration
downstream of the SCR
Misfire:
Monitors the Evaporative System which is present to collect fuel vapor and later feed such vapors into
the engine.
Boost Pressure:
Boost Pressure Control System monitoring.
AC System
For legacy R12 Systems. Not commonly supported
Exhaust Gas Sensor:
O2 and/or NOx Sensors.
PM Filter:
Particulate Matter Filter Monitor
EGR/Variable Valve Timing:
Exhaust Gas Recirculation system monitor
These monitors and the tests performed are generally manufacturer and vehicle specific. Please consult information specific
to your vehicle. Though specific to 2011 Ford Diesels, the following provides a good general guide to the monitors/tests,
systems and components of a modern Diesel vehicle:
http://ultra-gauge.com/ultragauge/support/Diesel_Readiness_Monitors.pdf
Please see the prior Readiness discussion for more details.
Note:
Not all vehicles support and perform all of the tests above.
Note:
For those States that use Readiness as a means to determine Emissions compliance, the required tests and the number
of tests is state dependent. Often a few failing monitors will not cause the emission inspection to fail. Check the State’s
website to determine which readiness tests are critical.
Note
: To restart/clear Right Column monitor status, select:
and select clear check engine light.
This will clear any posted trouble codes and restart readiness monitors
