Fault Code 62

[JZJOE80]

Howdy fellas, can anyone guess why fault code 62 (ECT Above Fault Code Value) keeps popping up? My tuner has tried to correct it, but no luck. Its worth noting that it ISNT above fault code value, Ive tried erasing the code and itll just pop up instantly. Can it be possible that when my custom harness was made they didnt ground it to the sensor ground on the ecu harness side, hence making it trip out? 

Car is a 2jzgte Non Vvti Mk4 Supra.

link ecu water temp sensor

link ts2jzx

[Vaughan]

Attach a PC Log of it happening and a copy of your tune please

[JZJOE80]

2 minutes ago, Vaughan said:

Attach a PC Log of it happening and a copy of your tune please

will do when i get a chance, looking over it right now and fault code value is set to 151°F 

Can this be my issue?🥴

 

[Vaughan]

I need to see what the voltage at the ECU input is and what the ECU high/low voltage fault settings are, a log will show if it is intermittent or constant.