Help 8 Faults, v.low boost :(

[TimD]

Today driving home from work power went down dramatically, when i got home i found one of the sensors that make up the N249 had broken.

It had dropped down the back of the engine and onto the turbo, slightly melting the wire and plug and melting the plastic part of the sensor

I have the N249 bypassed which leaves the exact same sensor useless. I swapped the melted one for the un-melted one, plugged it all together and still got hardly any boost.

I plugged it into my computer and got the following errors

VAG-COM Version: Release 409.1-US

Control Module Part Number: 6K0 906 032 
  Component and/or Version: 1.8L R4/20VT SEA    0002
           Software Coding: 11500
            Work Shop Code: WSC 78901
8 Faults Found:
18048 - Internal Contr. Module (EEPROM) Error
        P1640 - 35-00 - -
17833 - EVAP Purge Valve (N80): Short to Ground
        P1425 - 35-00 - -
17955 - Boost Pressure Regulation Valve (N75): Short to Ground
        P1547 - 35-00 - -
17525 - Oxygen (Lambda) Sensor Heating Circuit: B1 S2: Short to Ground
        P1117 - 35-00 - -
17843 - Secondary Air Pump Relay (J299): Short to Ground
        P1435 - 35-00 - -
17829 - Secondary Air Injection Solenoid Valve (N112): Short to Ground
        P1421 - 35-00 - -
17695 - Boost Pressure Control Valve (N249): Open Circuit
        P1287 - 35-00 - -
16486 - Mass Air Flow Sensor (G70): Signal too Low
        P0102 - 35-00 - -

I'm supposed to be taking the car with me tomorrow for the touring cars, at this rate i wont be able to make it in the SEAT

Any help appreciated, can i completely bypass the N249 removing all of the sensors without the need for resistors?

Any fast help appreciated, thanks.

Tim

 

[TimD]

Plug for sensor, you can just see where the insulation has melted to bare wire

Here is what left of the melted sensor..

 

[Deleted member 9043]

i had bypassed my n249 to,

got the same fault codes as you and my wyre was melted to

 

[PhilW]

You need the sensors attached to make the ecu think that its still attached. You either leave it connected or do the resistor thing.


Maf is ****ed i think, but also check for leaks as the lambda one might be that.


But sort the problems you know you have first, get the boost back then run it with the MAF disconnected to see if pulls better, then you know your MAF is stuffed.

First code is nothing to worry about, that comes up when revo has been flashed to the ECU now and again.

N75 connections ok? Get someone else to try.

 

[ibizacupra]

check ya fuses also

 

[TimD]

Thanks guys...

I am going to try and get a replacement for the melted sensor and wire tomorrow.

The plan was to cut the melted plug off and solder a new one on, would that be ok to do?

Will be calling in a wreckers, doubt there will be an ibiza but i would imagine other 20vt's are very much the same?

 

[TimD]

Hi,

Can anyone tell me whether or not my car is safe to drive too and from work tomorrow with the faults above?

Thanks.

Tim

 

[acidstrato]

ibiza is the only 1.8T i know of with these bits on top of the engine, so u need to find out where ya looking on other cars

as for driving...i wouldnt wanna but as there all sensor problems i would think u might be ok

 

[TimD]

Well i've decided not to drive it.

I'm going to call an auto electrcian tomorrow and hope they can help. I'll also see if i can source the bits myself.

Cheers

 

[m0rk]

I think that's the best decision to make.

 

[ibiza-cupra]

EXACT same thing on mine happened,sorted the wire changed the fuse cleared the fault codes jobs a good en.

 

[TimD]

Car is going to a auto electricion tomorrow all being well, just going to get him to sort the buggered connection and then i'll source the other bits to finish it off and put it all back together.

Going to put the N249 back on as well!

 

[Ninja]

Hope you get it sorted soon mate.. Be sure to let us know what it was!

 

[TimD]

Well had the melted wire sorted and still getting the following..

VAG-COM Version: Release 409.1-US

Control Module Part Number: 6K0 906 032 
  Component and/or Version: 1.8L R4/20VT SEA    0002
           Software Coding: 11500
            Work Shop Code: WSC 78901
7 Faults Found:
18048 - Internal Contr. Module (EEPROM) Error
        P1640 - 35-00 - -
17833 - EVAP Purge Valve (N80): Short to Ground
        P1425 - 35-00 - -
17955 - Boost Pressure Regulation Valve (N75): Short to Ground
        P1547 - 35-00 - -
17525 - Oxygen (Lambda) Sensor Heating Circuit: B1 S2: Short to Ground
        P1117 - 35-00 - -
17843 - Secondary Air Pump Relay (J299): Short to Ground
        P1435 - 35-00 - -
17829 - Secondary Air Injection Solenoid Valve (N112): Short to Ground
        P1421 - 35-00 - -
17697 - Boost Pressure Control Valve (N249): Short to Ground
        P1289 - 35-00 - -

Please any help appreciated

Thanks

 

[TimD]

Panic over, i over looked bills advice!

Replaced a 10A fuse and we are back to normal!

 

[davidol]

exactly the same happened to mine, i suppose u did the same as me and bolted the n249 valve to one of the spare holes on the rocker cover but the heat snapped the bracket and it dangled down onto the manifold melting its guts out lol

mine wiring is fine however and its just left unplugged at the moment until i source anoter, matt tells me the valved are 70 quid from seat so tempted to just build a resistor pack, ecu light is illuminated due to this though

 

[TimD]

They are £29 + vat from seat

Yes i did the same as you, annoyed with my self really. I've fitted the N249 gubbins back on and just have it bypassed now. So hopefully wont have the same problem.