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I recently bought two 2020 GTI 130 PRO. When I bought the jet skis one of them did not have a TOPS switch and I was getting Fault Codes P1505 and P1506. I installed a new TOPS switch and Fault Code P1506 went way but P1505 is still there. I put it in exact like the other 2020 GTI is installed and I tried to clean the connection and I'm still getting the P1505 fault code. Any suggestions on what it could be or if anyone has away to fix the issue. I would even take any info on how to bypass the TOPS switch. Thank you
Do you have it snapped in the correct direction? If it's upside down it will think the ski is upside down and throw that code.
Try the fault finder included here , you might need a manual to find the pins.


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