Engine misfire: fault codes

[marty]

Hi, was whether anybody had come across the following before: yesterday morning the car was misfiring badly/very lumpy with no power and wouldn't rev over 1.5k (EPC, engine and ABS lights on dashboard was illuminated). In the evening when I came to try it it seemed fine (the engine light was on though). I originally suspected coilpack(s) but on reading the fault codes and the fact it seems to have cured itself must be something different:

Chassis Type: 6K - Seat Ibiza
Scan: 01,02,03,08,15,17,25,35,56
 
Address 01     -------------------------------------------------------
   Controller: 6K0 906 032 AA 
   Component: 1.8L 20VT EU3       0002
   Coding: 10500
   Shop #: WSC 00000
7 Faults Found:
17964 - Charge Pressure Control: Negative Deviation
            P1556 - 35-10 - - - Intermittent
16795 - Secondary Air Injection System: Incorrect Flow Detected
            P0411 - 35-10 - - - Intermittent
17953 - Throttle Valve Controller: Malfunction
            P1545 - 35-10 - - - Intermittent
17950 - Angle Sensor 1 for Throttle Actuator (G187): Implausible Signal
            P1542 - 35-10 - - - Intermittent
17966 - Throttle Actuator (G186): Electrical Malfunction
            P1558 - 35-10 - - - Intermittent
17953 - Throttle Valve Controller: Malfunction
            P1545 - 35-10 - - - Intermittent
17972 - Throttle Actuator (J338): Under-Voltage during Basic Setting
            P1564 - 35-10 - - - Intermittent
Readiness: 0000 0000

Address 03     -------------------------------------------------------
   Controller: 1J0 907 379 AF 
   Component: ASR     20 IE CAN  0001
   Coding: 13404
   Shop #: WSC 11111
1 Fault Found:
01314 - Engine Control Module
            49-10 - No Communications - Intermittent

Address 08     -------------------------------------------------------
   Controller: 6K0 959 291    
   Component: AUTOCLIMA-220    X03.03
1 Fault Found:
00792 - A/C Pressure Switch (F129)
            03-10 - No Signal - Intermittent

Skipping Address 15-Airbags

Address 17     -------------------------------------------------------
   Controller: 6K0 920 901 D  
   Component: 6K-KOMBIINSTR. VDO V02 
   Coding: 00442
   Shop #: WSC 00000
   IMMO-IDENTNR: SEZ7Z0Y0628728       
1 Fault Found:
01039 - Coolant Temperature Sensor (G2)
            30-10 - Open or Short to B+ - Intermittent

Address 25     -------------------------------------------------------
   Controller: Bitte Adress
   Component: e 17 eingeben          
No Faults Found
  or DTCs not supported by controller
  or a communication error ocurred

Address 56     -------------------------------------------------------
   Controller: 6K0 035 186 C  
   Component:  Radio GRO         1V32 
   Coding: 00401
   Shop #: WSC 06402
1 Fault Found:
00856 - Radio Antenna
            29-00 - Short to Ground

End   -------------------------------------------------------

After reading/clearing the faults the engine light went out and stayed out and on a test run it seemed to be fine - is this just a freak occurrence or do I need it checking out by a garage?

Anybodies thoughts would be much appreciated! Cheers.

 

[andybmk3cupra]

hiya mate ive had exactly the same faults over the last week on my ibiza cupra. very similar symptoms and also like yours running poorly at one time and running ok another time although over the last couple of days it has got worse until yesturday the car just wouldnt rev at all and it idles extremly bad bringing up fault code 17976 mechanical fault in throttle body i have checked the parameters using my diag machine at work to see my throttle body not working so i am having to order a new one although it is possible to remove and give them a good clean which i tried but unfortunatly didnt work.lol just be aware if you have unplugged the throttle body you will need to re configure it hope this helps fella anymore questions dont hesitate to ask cheers

 

[marty]

thanks andy, re-reading the fault codes and a bit of searching it sounds right, how much is a new throttle body, sounds pricey?

 

[andybmk3cupra]

hiya mate i work for a garage so i get stuff at trade but ive pai 196quid plus the vat for a throttle body from andrew pages so im not sure what you could get 1 for, there is some about that are second hand but i didnt want to go down the route of buying used parts and maybe doing the job twice cheers

 

[marty]

Got a used throttle body from a breaker, no luck, exact same issues. My local independent VW garage later traced the fault to an electrical problem - a large multiwire connection to the back/below the throttle body was a mass of green corrosion, cleaned it up and so far is working. Fingers crossed.