D.e.t. Troubleshooting; D.e.t. Flash Signals - Polaris 800 Pro X Owner's Manual

Detonation Elimination Technology (D.E.T.)
Some Polaris snowmobiles are equipped with a
detonation sensor that monitors the engine and
responds to detonation by automatically reducing
the engine timing. When activated, the
"DETONATION FLASH" indicator (A) will flash
in the lower right-hand area of the
tachometer. The activated sensor reduces
engine detonation by retarding the
ignition timing. This results in decreased
engine RPM and performance.

D.E.T. Troubleshooting

Use this chart to determine causes and solutions for detonation. If
none of these conditions exists and the sensor remains activated, see
your Polaris dealer.
Possible Cause
Poor quality fuel
Improper jetting
Improper engine modifications

D.E.T. Flash Signals

Use this chart to determine the meaning and course of action for each
D.E.T. flash signal.
Type of Flash
3 flashes of 1 second
each
Solid 3-second flash, off
1 second, repeats until
engine is shut down
Solid non-blinking light
FEATURES AND CONTROLS
Solution
Replace with higher quality fuel
Verify and adjust per jetting chart
Do not modify the engine
Cause
Detonation
Faulty sensor
High water tem-
perature
Action
See DET Troubleshooting Chart
See your Polaris dealer
See your Polaris dealer. NOTE: If tempo-
rary operation is unavoidable, drive slowly
and stop the engine frequently to allow the
engine to cool.
A
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