Fault codes 17705 & 17545

[GAFF]

The 17705 can be on without the light on. I found that the light used to come on with a 17545 code

[dnphillips]

Hi All

Having the same issue with my 02 Golf GTI. Had the engine management light on three times so far this year with both error codes. Car runs absolutely fine before and after the light comes on. My local VW specialist says his diagnostics do not go deep enough in the the 17545 problem and that if it persists I will have to take it to VW in Newbury. He did service the car last week when the light was on, it was a major service and he commented that the spark plugs didn't look good and my fuel filter was badly clogged up. Both the golf and the Octy VRS show the 17705 codes each time they are serviced but I had never had any of the other problems listed. Here's hoping it was the fuel filter.

[Sambo281081]

Hi all, mine has now been booked into to skoda next friday to start the long process of getting rid of this very common fault. Connecting pipe from the turbo to the intercooller first i think..... got to start some ware i surpose.. i will keep you posted.

[Bodge]

Well, I've ticked a few more things off the list now!

Cleaned my throttle body and did the controversial 'master reset' thing, and changed the intercooler to throttle body hose. Also inspected the short hose going into the intercooler, and the intercooler itself. Can't say I've noticed much difference, but all my boost is there.

I've cleared the codes for now, so will see if they stay away. (I doubt they will!)

I'll let u know if its cured....

[martziniuk]

Well, I've ticked a few more things off the list now!

Cleaned my throttle body and did the controversial 'master reset' thing, and changed the intercooler to throttle body hose. Also inspected the short hose going into the intercooler, and the intercooler itself. Can't say I've noticed much difference, but all my boost is there.

I've cleared the codes for now, so will see if they stay away. (I doubt they will!)

I'll let u know if its cured....

So the new N249 did not work then?

[Sambo281081]

Hi guys, had my pipe changed last friday from the intercooler to the turbo pipe, (i think that was the one) it was an upgraded pipe or something with a double flange one end? Any way drove the car home and LIMP!!! NOOO. So its going back in on the 5th of august to have some thing else changed, they did show me the service bulliten that skoda had released for this fault and their are two other parts they say change if the fault is still present after the pipe has been changed, i will see if i can find out what bits they are.

[Bodge]

So the new N249 did not work then?

Nope! I was a bit peeved by that one, thought I had fixed it! Oh well, atleast the car drives well. Just these damn codes confusing me...

I'll keep going though, I havent lost hope.

[Old Dude]

I've had this warning light thing for years on my 4x4 hatch and never got any sense out of the main dealers. They've just wanted to keep swapping the same parts over and over. I didn't mind that under the extended warranty but there was no way I was paying for it.

The light only ever came on when the car was barely moving and my foot was off the accelerator. There wasn't any perceptible change in the performance and after a week the light would go out for a week or two at most.

I've been keeping an eye on this thread for ages and when the 'pipe' solution showed up, I thought it was worth a try. It made a huge difference. I've never been disappointed with the performance but it was transformed and became much smoother. So far it has done 3,500 warning free miles since the swap and I'm keeping my fingers crossed that it really has done the trick.

)

[Bodge]

OK, well I have some good news. Since I changed the intercooler to throttle body hose, and cleaned the throttle body, I've done well over 3000 miles, and the codes have not come back yet.

All the power seems to be there all of the time, and I have had no strange running problems. The codes would normally come back after not many miles, but they still arn't back, which is a good sign.

Just for reference, so far I've changed:

1. Cam cover breather hose

2. Vacuum hose under inlet manifold, can't remember which one exactly right now, but its the one that always goes!

3. Diverter Valve (Forge)

4. Turbo pipe to viper pipe hose at rear of engine (turned out i had the latest version anyway!)

5. N249 valve

6. Intercooler to TB hose

7. Cleaned TB and did the 'bonnet up door open' reset thing.

Up until stage 5 nothing had worked....

Maybe it's all the 100 Octane fuel I've been using in Germany!

[okenobi]

My car is still not running right. The engine light came on a while back, but my bro found a pressure leak in the side of the head, which we've sorted. The light went out, but symptoms persisted and I'm not sure if the codes are still there as I've not read them for a while.

I'm determined to get this sorted once and for all, as I really enjoy my car and it should be running right. Is anyone else still experiencing problems?

[okenobi]

So everyone else totally sorted?! :confused:

[Bodge]

Mine's good as gold now.

Changed the short hose to the intercooler inlet and fitted some nice stainless hose clips the other day, just for the hell of it! So that's 5 hoses and 2 valves replaced.

Looks like cleaning the TB is the real cure though.

Having a boost gauge fitted allows you to see exactly what's going on aswell, so I'd recommend fitting one.

[chicken_eyebrow]

I did a TB clean on Suzes 4x4 Turbo the week before last as it'd been suffering from the 17705 and 17545, cleared the codes and (fingers crossed) they haven't come back

[okenobi]

I wish the TB clean was the answer for me :(

If I had the money, I'd just replace everything - TB, MAF, pipework, but I don't! I'll try to keep people updated with anything I try. Just wondered if anyone else was still struggling. I don't really care about the code(s). It's the symptoms that bother me!

[Matthew_N]

Mine's good as gold now.

Changed the short hose to the intercooler inlet and fitted some nice stainless hose clips the other day, just for the hell of it! So that's 5 hoses and 2 valves replaced.

Looks like cleaning the TB is the real cure though.

Having a boost gauge fitted allows you to see exactly what's going on aswell, so I'd recommend fitting one.

Hi there, Ive got a Mk4 Golf Gti with an AUM 1.8T and these fault codes are a massive problem for a number of people with this engine there are countless topics on UK MkIV.

I dont think cleaning the TB is the definitive answer, as Ive done this along with fitting a new Forge 007 but still get the codes.

The codes are related, the 'pressure drop' code hints to a boost or vacuum leak somewhere in the system, as a result you get the 'system too rich' code come up aswell.

I think it really is hit and miss as to what cures these codes on different cars, as there are so many different vacuum lines, valves and boost hoses that it is luck of the draw which one is faulty on your car.

Like the guys who have posted on this thread Im getting rather fed up with these codes.

At the moment Im in the process of checking all the hoses, joints and valves for leaks, its such a PITA and I just want it sorted.

I came across this site from a random google of the 17705 error code and Im glad I did as Ive not seen the 06A 145 790C pipe mentioned before so Ill definetly check that one out this weekend.

In terms of solving these codes I really do think its a case of checking all the vacuum and boost lines.

[Jigger72]

N75 valve did the trick for me, after trying Forge DV007 and checking all the hoses, none of which were split

[okenobi]

Hi there, Ive got a Mk4 Golf Gti with an AUM 1.8T and these fault codes are a massive problem for a number of people with this engine there are countless topics on UK MkIV.

I dont think cleaning the TB is the definitive answer, as Ive done this along with fitting a new Forge 007 but still get the codes.

The codes are related, the 'pressure drop' code hints to a boost or vacuum leak somewhere in the system, as a result you get the 'system too rich' code come up aswell.

I think it really is hit and miss as to what cures these codes on different cars, as there are so many different vacuum lines, valves and boost hoses that it is luck of the draw which one is faulty on your car.

Like the guys who have posted on this thread Im getting rather fed up with these codes.

At the moment Im in the process of checking all the hoses, joints and valves for leaks, its such a PITA and I just want it sorted.

I came across this site from a random google of the 17705 error code and Im glad I did as Ive not seen the 06A 145 790C pipe mentioned before so Ill definetly check that one out this weekend.

In terms of solving these codes I really do think its a case of checking all the vacuum and boost lines.

Glad this is helping some people! I'm still struggling on. Haven't had the time to be looking at it lately. Will update when I do.....

Jigger, you just replaced the N75, or modded, or removed or what?

[karlbar2k]

I came across this site from a random google of the 17705 error code and Im glad I did as Ive not seen the 06A 145 790C pipe mentioned before so Ill definetly check that one out this weekend.

I got one for sale if you want http://briskoda.net/items-sale/mk1-octavia-turbo-pancake-pipe/150424/

[Matthew_N]

I got one for sale if you want http://briskoda.net/items-sale/mk1-octavia-turbo-pancake-pipe/150424/

Ill take a look this weekend, to see if this is the problem, if it is Ill more than likely take it off your hands, cheers.

[Matthew_N]

Thought Id check back and post an update.

Took a good look at all the vacumm lines the other day and found this:

Its the line that runs from the inlet manifold, under the air intake tract and back to the brake servo.

I patched it up with a hose joiner and some hose clamps for the time being.

I cleared the code and have had nothing return yet , it passed the MoT over the weekend with the emissions well within tolerance, so maybe it is cured?

Like I said before, this code has been caused by many different things on different cars, so its a case of checking all your boost hoses and vacuum lines.

[Jigger72]

Glad this is helping some people! I'm still struggling on. Haven't had the time to be looking at it lately. Will update when I do.....

Jigger, you just replaced the N75, or modded, or removed or what?

I've only just noticed this. Sorry

I just replaced with a standard N75F

[Bodge]

Its the line that runs from the inlet manifold, under the air intake tract and back to the brake servo.

I patched it up with a hose joiner and some hose clamps for the time being.

Wow! I really wouldn't be driving that if I were you. That's the vac feed for the brake servo, so with no vacuum you have no servo assistance, and your brakes will be virtually impossible to operate if that hose pops off. Get that hose changed asap mate.

Looks like you've found the source of your vacuum leak though!

[karlbar2k]

OMG that could have been nasty!!!! I thought mine was bad with a little bit of cracking on the rubber :eek: Did the brakes not seem to have gone on holiday?

[Andy_VRS]

I had the 17705 problem after a re-map it showed up so my remapper had the code written out of the loop(by a 1.8T god in greece who is running a 600+bhp engine) so to speak now when i'm on boost i get that lovely cool whistle from the turbo!!

[Bodge]

I had the 17705 problem after a re-map it showed up so my remapper had the code written out of the loop(by a 1.8T god in greece who is running a 600+bhp engine) so to speak now when i'm on boost i get that lovely cool whistle from the turbo!!

So you never found the source of the error code then?!