It turns out the one I am actually having a problem with is a 2023. I was able to find the error codes and by using a manual I found for a G25E-5, I believe these are the codes:

194 CrankSyncFault - Loss of synchronization on the crankshaft sensor, normally due to noise on the signal or an intermittent connection on the crankshaft sensor
Fault action: None
Solution: Check Crankshaft sensor connections
SECM (SIGNAL) Pin B5 to Crank sensor Pin 3
SECM (Sensor GND) Pin B1 to Crank sensor Pin 2
Switched 12V to Crank sensor Pin 1
Check for defective Crank sensor

EST1_Open - MI-07 : 421 (MI-04 : 42)
EST1 output open, possibly open EST1 signal or defective spark module

GasFuelAdaptRangeHi - MI-07 : 731 (MI-04 : 73)
In LPG mode, system had to adapt lean more than expected

O2RangeLow - MI-07 : 911
Pre-catalyst O2 sensor voltage out of range low, sensor signal shorted to ground

O2RangeHigh - MI-07 : 921
Pre -catalyst O2 sensor voltage out of range high, sensor signal shorted to power

Any direction on these would be very much appreciated.

Hello, I am having the exact same problem with a 2018 G25E-7 and it would be great to hear more about how you were able to take care of it.

This machine will literally shut down 20-30 times in 24 hours, I blew all the dust out of the radiator and the coolant level is good but it makes no difference. We have two of the same machine operating in the same conditions and the other one works without any problems.

I didn't understand whether or not you needed software to see the error codes. As I type this out, I realized that when I performed the 'pedal maneuver' the check engine light flashed irregularly. Do I need to count the flashes? Unfortunately we don't have manuals for these forklifts, so I would really appreciate any info you can pass on. Thanks in advance,

would this work on a G20P-7 do you know?

Ive got the E-controlls lead and software but non of te passwords I have allow me to access the ecu, does anybody know of a password?

Thanks

Figured I would post an update. I was able to get he MIL light to blink out 3 digit codes by doing the "Pedal Maneuver"

The Pedal Maneuver procedure is below if anyone else needs the information.

"Displaying Fault Codes (DFC)
from SECM Memory
To enter code display mode you must turn OFF the
ignition key. Now turn ON the key but do not start
the engine. As soon as you turn the key to the ON
position you must cycle the foot pedal by depressing
it to the floor and then fully releasing the pedal
(pedal maneuver). You must fully cycle the foot
pedal three (3) times within five (5) seconds to
enable the display codes feature of the SECM.
Simply turn the key OFF to exit display mode. The
code list will continue to repeat until the key is
turned OFF. "