MX5800 P0605 Code Help! **UPDATE**

[SkylineAcres16]

That's an interesting theory lugbolt

 

[tgarber22]

Dang I think I've just experienced the same thing. Dead battery. Replaced and P0605 error that won't stay cleared and I can't start the tractor. Tried to jump it as well so maybe that could be a culprit. Very information read. What other options do I have besides unplugging can connectors

 

[tgarber22]

Correction..I had starter sol. Cable disconnected. Now it just turns but no start

 

[SkylineAcres16]

Keep us updated on what you find out...hopefully it isn't the ECU like mine was

 

[whitetiger]

I still can’t believe they did this to off-road ag equipment

Actually, it started showing up on larger Ag equipment in approx the mid-1990s, about the same time as the US auto industry began to use it.

 

[tgarber22]

Keep us updated on what you find out...hopefully it isn't the ECU like mine was

We're you ever able to start the tractor with the P0605 code?

 

[SkylineAcres16]

No

We're you ever able to start the tractor with the P0605 code?

No, it never started again until a new ECU was connected. It wouldn't even communicate with the dealers laptops when plugged in. They tried 2 of them

 

[GreensvilleJay]

well the old ECU is YOURS ! be sure to get it back..... odds are replacing the CANbus interface chip ($1) could get it 'up and running'.Anyone with SMT R&R can do that.

sadly ,less than $10 worth of 'electronics' could have protected the ECU from being 'fried'.

Was taught to design 'controllers' as if they were satellites..you have ONE shot to design right,then they're in orbit, forever and no service guy ( BTW this was preShuttle days.....) I never 'lost' any of my remote energy panels,some 15 miles away on 'direct wires', even when nearby lightning bolts took out computer, terminals, etc. so I KNOW it can be prevented.

 

[tgarber22]

Just got it back from taking the tractor to the dealer. They put in "known good" ECU and still read the code. He did some quick checks on the pin-outs, more than discussed in the WSM, and said one of them was not getting power. I opted to leave it on the trailer and take it back home and work on tracing it down. He suggested replacing the wiring harness, but I'd like to find the issue on my own time first before I do that. He said the power wasn't coming through here, but I'm not sure what pins are supposed to get power and which aren't. Anyone know that answer? Haven't found it in the WSM yet

 

[North Idaho Wolfman]

Just got it back from taking the tractor to the dealer. They put in "known good" ECU and still read the code. He did some quick checks on the pin-outs, more than discussed in the WSM, and said one of them was not getting power. I opted to leave it on the trailer and take it back home and work on tracing it down. He suggested replacing the wiring harness, but I'd like to find the issue on my own time first before I do that. He said the power wasn't coming through here, but I'm not sure what pins are supposed to get power and which aren't. Anyone know that answer? Haven't found it in the WSM yet

Based on what you have highlighted in RED, the only "power" coming in on any of those pins is (-) Ground , not (+) positive, the rest of the pins are outputs.
So look at the ground connections.

 

[GreensvilleJay]

if P0605 really means 'flash rom cpu abnormality'.....
brings up LOTS of questions....
1) does this ECU control the display, that shows you the error code ?
2) if not HOW does the 'error code' get transmitted from ECU to the display ?

If #1 is true, then the 'known good' ECU would have 'cleared' the error code< well, actually it would not be IN the ECU,so can't be displayed.
Also if #1 is true , then power ( +12 and gnd ) are good as ECU IS functional..it's displaying information.

Since the 'known good ECU' gave the EXACT same code, it's NOT the $$$ ECU, but the error code 'suggests' it IS an 'internal' problem INSIDE the ECU, making it 'bad', but the 'known good ECU' says the same thing....so it must be 'bad' but it's a 'known good ECU'.......arrrrrgh.

Sadly ONLY the original programmer KNOWS why that P0605 came up.

 

[bobdcoder]

Power surge can and does take out components.

I've seen it on multiple types of equipment.

They try to avoid it with the circuitry, diodes, caps, etc but they can never prevent all possible failures.

... all on a seseme seed butter flavored toasted Bun!
Evidently.... Light/Darkness, Air and water tries hader too move down hill and with more effort. LOL

Respectful too LugBolt.... and ALL his comments

Power surges, power spikes, Power drops, variations in voltage currents and amps, falty connections/wires and the Flux Capacitor (needs more urnininum and non conductive tungsten, pelinium mix, big mac meals), etc
.
You would think with a $50,000.00 equipment price tag and a $2,000.00-$5,000.00 (firm-less) blank ECU/ECM (sealed box) that they could afford too splurge a bit (say $80.00) on a few extra essential gizmo electronic parts..(BEFORHAND as a PREVENTIVE SAFTEY NET)!
Perhaps a DC surge protector sys and a voltage regulator from NAPA or walmart would be better than..... NOTHING!
They could even splurge a bit more ($0.50- $1.00) and add in an inline (replaceable) low amp fuse wire for any vital-vunerable ECU/ECM. Even an external high//low capacictor and resistor filtering system as too prevent spike and help preserve the High Dollar FRAIL child electro perodigy no larger and a cigar box and no thicker than a 10 pack of child size tampons. (un-used)!
ANYTHING external too protect something so vital is beter than NOTHING!

Yet the highly paid Kabota electronic enginers and designrs pretend too be a bunch of deformed, Incompetnt retards incapable simple common sense and logics? Such conveys (dictates) this is a purposful act.

Hecklle! Even the salvage parts out of a depleted used up desktop PC (junk yard parts), the electroic power supply and/or boards, AC/DC (step up or downs), splitters, etc are better and more feaseable optional alternatives compared too the (use at your own risk and dime) NOTHING preventives/safeties in all Kabota's.

Perhaps the electronis dsinger and wireing enginers need too join heads and lay off the Sake during work hours for a few months!

Then again, to be fair.... I see Kabota's Transparent logic and Goal... Rape money!

• Entrap and Keep them coming back and begging like a broke addicted crack head having sever Withdraw symotoms.
• Delay and limit the available supplies and ignore the urgency.
• Keep inventory slow, low and limited only.
• Huge overpriced reoccurring (residual/passive) income/revenues is job security for all those involved in the ring,
  • Except the customer/owner/user of course.
• Tell them whatever you want but keep them coming back, unsure and guessing!
  • Its not like You are under oath in the courtroom.
  • Beside- Kabota has it all locked down... and the consumer cant prove otherwise in the first place.

Your screwed the moment you turn on your trun-signal and enter the Kabota Dealer/Service Lot.

Hey! At least i didnt attack the software/firmware engineres/desingers/coders... Then again I happen too fall under that category as well and that would be.... able too see/understand the inner workings of that whch others do not, overlook/fail too consider or notice.

Relax--- we now have AI incopentance to save our future... or blame for all future FU's.

Man.... I feel better now thats off my chest!

Sorry!