[old_n07]

Hi,

New to the forum but some of you may know me from UK-MKIV's.

I have a 2003 MK4 Golf Tdi 130 (ASZ engine) and it has been recently dropping into limp mode and returning this in VCDS

17965 - Charge Pressure Control: Positive Deviation
P1557 - 35-10 - - - Intermittent

After some research I have replaced the N75 and Vac lines but this has not made any difference so now I'm thinking it is the VNT mechanism that is coked up so I have a few options

• Chemical clean (Innotec) - easiest option
• Remove turbo and manually clean VNT mechanism - cheapest option
• Remove turbo and get it refurbed
• Get a reconditioned unit - last resort

So I'm researching the cleaning options at the moment and I'm also open to ther suggestions

TIA

Neil

 

[Keithuk]

VAG Error Code: 17965

EOBD II Error Code: P1557

Fault Location:
Turbocharger (TC) pressure - control limit exceeded

Possible Cause:
Hose connection interchanged/not connected.
Turbocharger (TC) boost pressure sensor.
Turbocharger (TC) wastegate regulating valve.

As taken from my Free EOBD II Error Codes software

 

[old_n07]

Cheers Keith,

All the hoses are on with none of those shoot clips broken and I've replaced the N75 valve but not changed the MAP sensor on the IC they are £70 according to ETKA so I'll see if I can get one to try off a mate to try.

Where abouts in Stoke are you Keith? I'm near to the Britania.

Neil

 

[Keithuk]

I live in Newchapel Neil. Strange the is a minimum of a 40 character reply.