PRO XS 250 Throwing' Code: 1062-24

[Oregonbass12]

Engine Type: 250 Pro XS Fourstroke
Engine Year: 2021
Engine Serial #: 3B040041
Model #: 12500033A
Prop: Fury 23P 3 Blade
Max RPM: 6000 (or a little over)
Boat: 2021 Nitro Z21

Recently I had an event where I was launching on a new boat ramp with a much more gradual pitch than usual and swore I had disconnected from my trailer (but hadn't). I was reversing pretty hard thinking I was somehow stuck to the bunks or something. I am assuming it is related to this event but later in the day my engine threw code 1062-24 which my Mobile Vessel View stated:

Mechanical demand sensor B
The input circuit for the sensor is above the valid limit.
Engine: STBD
Engine Throttle Demand Sensor is not working properly
Service engine soon.

Note: Whether or not I clear the code, my engine does not limit RPM's so I can get up to the 6000 range. I can clear the code and the engine functions totally normally until I shut the engine off and turn the key all the way off, thus powering off the gauges as well. Once I turn on the ignition again, the code appears again.

I do not have access to a trusted mechanic locally so I would like to do what I can to fix this issue myself.

Any advice?

[Jasonrs]

Im putting money on shift actuator. Dealer work imho

[EuropeanAM]

Im putting money on shift actuator. Dealer work imho

That's likely going to be a bad bet, since the fault is THROTTLE DEMAND sensor.

First step would be to make sure your throttle is consistently and fully returned to the idle stop every single time. It must remain there when key is turned on, and when engine is started (any throttle input whatsoever will cause this type of fault).

Also possible that the cable or hotfoot is maladjusted, the sensor is faulty, or even that the harness has abraded against a surface that is shorting one or more sensor circuits.

[Oregonbass12]

Thanks Don,

Where is the harness located?

[EuropeanAM]

Behind the Starboard-side intake runner.

[Oregonbass12]

Thanks Don,

Tonight I finally had the time to remove the intake runner and look at the harness. I found that it was not zip tied like it should have been and was rubbing against one of the engine bolts. I could see that it had rubbed through the insulation in a couple of the wires. I used electrical tape to protect each of the wires individually, then zip tied them so they would no longer rub against anything else. In the garage, the engine stopped throwing the code. I plan on testing it out on the water soon.

[EuropeanAM]

Strongly recommend replacing the demand sensor, and then routing/tying the wires so that this cannot occur.

That will resolve the problem.

[Oregonbass12]

Problem solved! I ran the boat hard for a couple of days and everything worked perfectly. One thing I forgot to note in my earlier post is that, after performing the repair, the fault did not fully clear until I turned the battery cut-off switch, thus powering off the whole boat, then turning it back on. Don, do you think that the wires faulting out would damage the sensor, leading to further potential problems down the road?

[EuropeanAM]

Really not something I can accurately answer, given that I've not inspected the component, and don't know precisely WHICH wire(s) were shorting out against the capscrew or block.

The sensor will let you know if relatively short order if it's damaged.