(17705) and (17704) fault codes

[supersyz]

I have a mk1 leon cupra 1.8 t 20v and the engine managment light has come on, i plugged it into my fault reader but the codes its giving me are not in my book and i cant find them online.

(17705) and (17704) these are the codes and if anybody can help it would me most apreshiated.

 

[DPJ]

17704/P1296/004758 - Error in Mapped Cooling System
Possible Symptoms

* Cold start issues

Possible Causes

* Coolant Temperature Sensor (G62) faulty
* Coolant Thermostat faulty

Possible Solutions

* Check Coolant Temperature Sensor (G62)
* Check Coolant Thermostat
_____________________________________________________
17705/P1297/004759 - Pressure Drop between Turbo and Throttle Valve (check D.V.!)
Possible Symptoms

* Power Loss

Possible Causes

* Leaking hoses and/or pipes between components
* Check Boost Pressure Control Valve (N249)

Possible Solutions

* Check hoses and/or pipes between components
* Check / Replace Boost Pressure Control Valve (N249)
* Check / clean Throttle Valve, do Throttle Body Alignment

Special Notes

* Did anyone fitted an extra (wrong) dump valve?
__________________________________
Has the car been remapped? - I recall the first code can be a mapping fault.

 

[supersyz]

Thankyou very much for getting back to me with this, i havent owned the car long but i think it was been remapped as the turbo is running upto 1.2 bar.

Im also noticing some strange things with coolent temp gong up and down all the time but im not used to these cars. Also if i only drive for 5 mins from cold and restart her she struggles to start.

 

[Proc]

I've got similar fault codes up at the minute (17545 & 17705), think mine was running rich (fuel) and the pressure drop. I am currently running the standard Bosch recirculating valve and was wondering if this had gone, when i first bought the car the valve went and was replaced. I'm considering replacing it with a Forge 007P see if it solves the problem.

 

[supersyz]

Thnx for more imput and you will have to let us know how you get on and i will also.

 

[DIZZYCUPRA]

help???????????

i had this code com up after the check light came on 17704

i had the code cleared it went off for 2 days came back on today so i replaced the sensor but the light is still on?

do i have to get the fault code cleared again???????

 

[jet-black]

Most probably, do you hav access to vag-com or a hand held DTC scanner?

I've had about 4 errors including the 17704 appearing every couple of days since i've had the car, im slowly working through them replacing or checking the possible faults.

I replaced the temperature sensor some time ago and today i replaced the thermostat, as these are the two main causes of this problem im hoping it will go away.