EPC Fault - Check Sum Error 0601

[Joshkcupra]

Hi all,

After scouring around for hours reading on the internet about fault codes and specifically (P0601 internal check sum error - 01537), it appears this problem is solvable by having an update from your dealer, it also appears that the dealers like to just regard this as a hardware malfunction and like to charge you £800 for a new ECU, so don't be fooled.

It's appeared across a multitude of VAG cars, from VW's, Audi's, Skoda, and Seat, all requiring the ECU to be reflashed with this updated software, I'm not too sure why the car throws a fit after a period of time working perfectly fine, but according to what I've research online this is the best way to fix the issue.

I got in contact with my local dealer which is Lakeside in Essex, who told me it would be £90 just to diagnose the car and then a further £90 to reflash it, which I think is absurd considering it's a fault with their software! Wish me luck with battling it out with them!

Josh

 

[LeonCR]

i would expect half hours labour all they need to do is flash is no need to diagnose a fault if you know what it is

 

[Joshkcupra]

They claim they cannot fix the fault without doing the scan! Ha

 

[Paulki]

I had the same problem a couple of years ago, it is generally caused by a battery that is on it's way out. I would check your voltage, it needs to be over 12.5v or you could end up with the same problem again as the ECU in the TFSI models is sensitive to low voltage and the software gets corrupted.

A healthy or new battery will have a voltage of around 12.7v

If you're in Essex, take it to AMD, I had mine re-flashed there after I replaced the battery, I think it cost £70.

 

[Joshkcupra]

I replaced the battery with a new Bosch one and still getting the light

 

[LeonCR]

have you tried another dealer ?

 

[Paulki]

I replaced the battery with a new Bosch one and still getting the light

Have you had it re-flashed yet, as replacing the battery won't fix the corrupted software in the ECU?

 

[James_R]

They claim they cannot fix the fault without doing the scan! Ha

you know you can just request a software update?


that wouldnt require any diagnosis and would be unjustified but like paulki has said - if there is an underlying issue the fault might re-occur.

 

[Joshkcupra]

The problem with re-flashing is that it wipes your map off

 

[James_R]

You never mentioned it having a map but it gives you 2 choices:

1. any decent tuner should reflash your ecu if the software is wiped FOC.

2. Change software to a tuner with a good rep and decent back up.

 

[Joshkcupra]

I doubt anyone would do it FOC, surely they'd charge you for the time spent reloading the software?

 

[James_R]

Ok then, they'll charge you 10 minutes labour to reflash the software back on your med9 ecu.

We don't charge for it.

 

[James_R]

Ok then, they'll charge you 10 minutes labour to reflash the software back on your med9 ecu.

We don't charge for it.

 

[Joshkcupra]

I'd hope not at the price of the Revo maps! Lol

 

[James_R]

Well you can look at it this way:

Pay £200 for a car park map, have nothing but issues then never see the "mapper" again

Or

Pay £500 for possibly the best software from the likes of Revo, Giac, APR etc and benefit from real R&D, full technical back up and warranty. And if you don't like it you can have your money back within 30 days.

We don't charge out of courtesy, that and it's usually us that flashes over the software for warranty purposes.

 

[Joshkcupra]

I appreciate what you're saying as there are a lot of cheap mappers out there that will take your money, give you a piece of crap map and dissapear into the ether, but there are mappers out there that are very good but don't necessarily have the overheads that Revo have, therefore can offer maps at a more affordable price. I appreciate there is a lot of researching and testing which goes into the Revo maps, but I do think they are rather extortionately priced, and like in any competitive market someone sooner or later will provide a similar product at a reduced rate and effectively monopolise the market, as after all what you're providing is a binary code which many can copy and reproduce. If I had a spare £500 laying around I would go with the Revo map all day long, but unfortunately I don't, hence why I went with a less expensive mapper, who's map has been very good especially for the price.

 

[James_R]

It seems to be a game of getting what you pay for but in some cases you get a real bargain, especially with some if the lesser known but highly knowledgable tuners.

 

[Joshkcupra]

I had mine mapped by More-BHP who had mapped their own Cupra and ran it as a project car, the stage 1 map was £200 and I honestly couldn't fault it, no flat spots and very smooth

 

[James_R]

They have a good following from what I've seen.

 

[Joshkcupra]

What is the rough oh&p percentage for the Revo maps, if you're allowed to release that sort of info...