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Troubleshooting guide.
Problem
Gauge will not light up
Gauge lights up, but displays
"Er0".
Gauge lights up, but displays
"Er3".
Gauge lights up, but displays
"Er4".
Gauge lights up, but displays
"Er5".
Gauge flashes constantly.
Gauge will not dim.
Gauge remains dim at all
times.
Technical specifications
Minimum operating voltage
Maximum operating voltage
(operating at or near maximum voltage for an extended time can damage unit)
Gauge Resolution
Gauge accuracy
Typical current draw (@ 13.8V) -
Possible cause
Red wire does not have
power.
Black wire is not getting
a good ground.
Gauge is damaged.
Gauge is damaged.
Gauge is not calibrated
correctly.
Gauge averaging rate needs
to be reset.
Gauge warning points need
to be reset.
Warning limits are not set
properly.
Sender is not operating.
Air fuel ratio is too high or
too low.
SND terminal is not
connected.
Blue wire is not connected
correctly.
Blue wire is getting power
all of the time.
-
7 volts
-
17 volts
-
5 mV
±15 mV
-
0.2 A
Solution
Connect to a location that has power.
Connect ground to a different location.
Return gauge for repair.
Gauge must be returned for service.
(see instructions)
Gauge must be recalibrated.
(contact factory)
See "Setting the warning limits" in the
manual.
See "Setting the warning limits" in the
manual.
Reset warning limits.
The EGO sensor must be heated up
by the exhaust before it will operate.
Check fuel adjustment.
Make sure SND terminal is connected
properly.
Check wiring. Blue wire should
have 12 volts with headlights on.
Connect blue wire to location that only
has power when the headlights are on.
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