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Page 53/55 UltraGauge™ EM User Manual www.ultra-gauge.com
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Can’t read trouble codes
.
The engine need not be running, but the ignition must be in the RUN position and it must remain in this position. For vehicles
with 9141 or KWP2000 protocol: Exit the Menu system. Turn the ignition off. Wait 10 seconds, turn the ignition back to RUN
and proceed to the trouble code menu.
Can’t clear trouble codes
.
The engine need not be running, but the ignition must be in the RUN position and it must remain in this position. Some vehicles
such as older vehicles supporting the VPM protocol do not support this function. For vehicles with 9141 or KWP2000 protocol:
Exit the Menu system. Turn the ignition off. Wait 10 seconds, turn the ignition back to RUN and proceed to the trouble code
menu.
Scanning or Discovery fails
The engine need not be running, but the ignition must be in the RUN position and it must remain in this position during
discovery and scanning.
The Cable falls off the OBD II connector.
The vehicle’s OBD II connector contains a locking tab designed to capture the OBDII cable connector. If the vehicle’s OBDII
connector has been damaged such that the locking tab is missing or deformed, the connector may come loose or fall off. One
simple fix is to add a rubber band or tie strap around both connectors.
The Gauge sometimes displays “Err”.
If UltraGauge requests gauge data from the vehicle’s computer, but the vehicle does not provide the data, UltraGauge displays
Err.
This is commonly, and briefly seen when the vehicle’s ignition is switched from the RUN to the off position. It is
acceptable for
Err
to be displayed very infrequently during normal operation. If
Err
is displayed frequently, say once every 4
seconds, then a problem may exist. Turn the vehicle off and reseat the connector.
UltraGauge will not shut off
UltraGauge will not shutoff automatically while in the menu system. Exit the menu system and UltraGauge will detect that the
vehicle’s ignition is not in the RUN position and UltraGauge will shut off.
The key is in the run position, yet UltraGauge is dark.
Either UltraGauge is not receiving power or UltraGauge can not communicate with the vehicle’s computer.
Try the following measures:
Reseat the UltraGauge Connector.
Try UltraGauge in a different vehicle
The Vehicle’s OBD II connector will typically have a 4-20 Amp fuse. Check the fuse.
Check the Vehicle’s OBD II connector for corrosion.
Has the brightness of the display been turned to its lowest setting and it only appears dark? Could the light sensor
opening on the lower right corner of UltraGauge be blocked?
UltraGauge has its own internal fuse built into the connector. If the cable has been damaged the fuse may have opened.
Check the cable for damage. Note that it would take a shorted cable to open the internal fuse. This is unlikely. The
internal fuse is not replaceable.
MPG or DTE or Fuel Used not accurate
It is imperative that vehicles with MAP sensor, or that use diesel or natural gas, perform the MPG calibration. Without
calibration, MPG and Fuel usage can be off by 30%. See also Adaptive Volumetric efficiency. For DTE, check that the fuel
tank size has been set correctly. The fuel tank size is listed in your owners manual.
Some Gauge Zones are blank
Each zone on a page configured for 4 , 6 or 8 gauges can have a gauge assigned or not. A zone that is unassigned will appear
empty.
