From the Service Manual
LCD Gauge (1000R Base Model)
1: Turn Ignition Key to ON with Lights
2: Press selector button on gauge repeatedly until Engine Hour "EH" is diaplyed on the Gauge
3: Press and hold the M button while Quickly toggling the HI - LO beam switch to enter the fault code display function.
(Note a minimum of 3 hi-lo toggles must be completed in 2 seconds)
If No P-Code is active, a "No Active P Codes" scrolling message will be displayed, If there are active P-Codes, it will be displayed. Once the Last code is displayed, the Gauge displays END then defaults back to Normal operation.
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Analog / Digital Gauge
1: Turn Ignition Key to ON with Lights
2: Wait for the multifunction gauge to complete its self test function
3: Press the S (set) button repeatedly until the Hr (hour) is displayed in the secondary digital display
4: Press and hold the M button while Quickly toggling the HI - LO beam switch to enter the fault code display function.
(Note a minimum of 3 hi-lo toggles must be completed in 2 seconds)
Note: If the fault codes being displayed was interrupted by another message repeat the process
To Exit the Fault Code Press both the M and S buttons simultaneously