Epc and engine light problem lead to limp mode

[Steveyg777]

A few days ago i was travelling home and my epc light came on and my turbo shut off. My car is the Monte Carlo edition, 1.2 TSI, 105 BHP early 2012 model, it's fine about 56000 Miles and i don't thrape it.

 

I got home and left the car overnight. I tried the car again, the next day and the EPC light wasn’t on, but the engine light was. I took the car out and the turbo was back again soon. Went back into limp mode with the EPC light coming back on.

 

I have took it to my garage and the mechanic thinks the arrows are pointing towards the problem being caused by the throttle pedal been slightly  loose/wobbly so he is going to order another one, he thinks it might cost about £80.

 

I’m not sure what you guys think, but I ordered an ODB to device over the weekend, it’s the Carista model it seems to be very extensive in diagnosis and I thought I could post the results here in case it would help someone to see what the problem is, and if they think it’s the same problem that the mechanic thinks.

 

Here are the results:

ECU info obtained with Carista 750099 for iOS:

VIN: TMBFN25J6C3106495

CAN network gateway
Part #: 6N0909901
Component: GW-K-CAN TP20
Software version: 0531
ASAM/ODX identifier: [none]
Coding: 032300 (hex)
Fault codes:
02078 Manufacturer-specific code

Engine
Part #: 03F906070HK
Component: SIMOS10.22A
Software version: 2693
ASAM/ODX identifier: EV_ECM12TFS02103F906070HK
Coding: 00110056200400080000 (hex)
Fault codes:
06521 Manufacturer-specific code
13627 Manufacturer-specific code

ABS
[ECU not present]

Power steering
[ECU not present]

Airbags
Part #: 6R0959655K
Component: VW10AirbagT2C
Software version: 0020
ASAM/ODX identifier: EV_AirbaVW10BPAVW250
Coding: 003243 (hex)
[No fault codes]

Instrument cluster
Part #: 5J0920941E
Component: KOMBI 
Software version: 0305
ASAM/ODX identifier: EV_Kombi_UDS_VDD_RM09
Coding: 410A00 (hex)
[No fault codes]

Radio
[ECU not present]

Media player
[ECU not present]

Immobilizer
Part #: 5K0953234
Component: IMMO 
Software version: 0305
ASAM/ODX identifier: EV_Immo_UDS_VDD_RM09
Coding: 000000 (hex)
[No fault codes]

Heater & air conditioning
Part #: 5J0820045D
Component: Man AC 
Software version: 0202
ASAM/ODX identifier: [none]
Coding: [none]
Fault codes:
00819 Manufacturer-specific code

Central electronics
Part #: 6R7937087K
Component: PQ25 BCM 
Software version: 0531
ASAM/ODX identifier: [none]
Coding: 25980B3808C92400922008002C2B08C00040400F60000000020000000000 (hex)
[No fault codes]

Obtained with Carista 750099 for iOS.
Download app: https://itunes.apple.com/app/id954363569
Facebook: https://www.facebook.com/caristaapp

Basic OBD2:
P0222 (Pending) (Confirmed) - Throttle/Pedal Position Sensor/Switch "B" Circuit Low

CAN network gateway:
02078 - Media Player Position 3 (R120)

Engine:
06521
13627

Heater & air conditioning:
00819 - High Pressure Sensor (G65)

P0222 - Throttle/Pedal Position Sensor/Switch "B" Circuit Low

Freeze frame :

    Calculated load: 0 %

    Coolant temperature: 72 °C

    Intake manifold pressure: 99 kPa

    Engine rpm: 0 RPM

    Vehicle speed: 0 km/h

    Ignition timing advance for cylinder 1: 0.0 °

    Intake air temperature: 57 °C

    Absolute throttle position: 16 %

    Time since engine start: 0 sec.

    Fuel rail pressure: 2430 kPa

    Commanded evaporative purge: 0 %

    Ambient air pressure: 99 kPa

    Battery voltage as seen by the engine ECU: 11.68 V

    Absolute engine load: 0 %

    Commanded equivalence ratio (Fuel system): 1 

    Relative throttle position: 42 %

    Outside temperature: 20 °C

    Absolute throttle position B: 100 %

    Absolute throttle position 😧 15 %

    Absolute throttle position E: 16 %

    Commanded throttle actuator position: 6 %

00819 - High Pressure Sensor (G65)

Freeze frame :

    Priority: 2 

    Malfunction frequency counter: 44 

    Unlearning counter: 21 

    Odometer reading: 88933 km

13627 - 

Freeze frame :

    Priority: 2 

    Malfunction frequency counter: 1 

    Unlearning counter: 255 

    Odometer reading: 90503 km

    Engine rpm: 0.00 RPM

    Normed load value: 0.0 %

    Vehicle speed: 0.0 km/h

    Coolant temperature: 67 °C

    Intake air temperature: 53 °C

    Ambient air pressure: 1000 mbar

    Voltage terminal 30: 11.882 V

06521 - 

Freeze frame :

    Priority: 2 

    Malfunction frequency counter: 2 

    Unlearning counter: 255 

    Odometer reading: 90503 km

    Engine rpm: 0.00 RPM

    Normed load value: 0.0 %

    Vehicle speed: 0.0 km/h

    Coolant temperature: 72 °C

    Intake air temperature: 57 °C

    Ambient air pressure: 990 mbar

    Voltage terminal 30: 11.679 V

02078 - Media Player Position 3 (R120)

Freeze frame :

    Priority: 2 

    Malfunction frequency counter: 3 

    Unlearning counter: 171 

    Odometer reading: 77034 km

 

[Ootohere]

As just a mater of a quick check did the mechanic plug into the car with their device and read it for  fault codes?

 

*Did the mechanic consider since it was the EPC light & Exhaust Emissions light that there might be misfires

and did they take out the spark plugs and inspect them? *

 

Enough misfires in a cycle should have logged a fault code, and that is going to put the car into limp mode and disable the turbo. 

Even misfires not logged can put the car into limp mode.

?

When were the spark plugs last replaced?

 

Does your engine have the armoured leads fitted or on 1 lead?

http://briskoda.net/forums/topic/495806-ht-leads-skoda-fabia

http://briskoda.net/forums/topic/430215-11836-cylinder-disabling-6352-cylinder-3-misfire

http://briskoda.net/forums/topic/458349-problemtic-fabia-12-tsi

 

Edited 20 June, 2023 by toot

[Steveyg777]

Hi toot. I'll reply later extensively as i can't at the moment. I just want to add a little more info now though.

 

I travelled in the car not long ago, i kept under 2000rpm and the turbo confined to work. I got into 5th gear at about 33mph at one point so i stayed in low revs and the car jolted a couple of times and then the epc light came on again. Would that indicate that it happens when the turbo is having to work harder?

[Ootohere]

A simple questions.  For later.

?

Did he whip them out and check them?  The plugs that is!

?

When were they replaced last?      

?

You have not had a refuelling mishap have you.  Just your usual fill up of E10 95 ron or E5 97 or 99 ron from where you usually fill up?

[Steveyg777]

Hi again toot.

 

I've not put the wrong fuel in lately. The spark plugs were changed last year or the year before and they are the high mileage ones that can cope with 45000 Miles (or something like that).

 

He didn't literally take the spark plug leads out and inspect them but i think he checked to see if they're were loose. He has mostly used his experience and his snap-on computer to diagnose and all the information ive given him seems to convince him more that it is the pedal - more so the sensors attached to the pedal.

[thomasaspin]

The 1.2 tsi’s are renowned for turbo actuator failures causing epc issues , as for pedal circuit too low you could have a faulty pedal which again would cause jerky motion etc 

[Steveyg777]

Yes, i am experiencing jerky motion at times. Hopefully i can replace the pedal and all will be fine. I'll keep you posted.

[thomasaspin]

32 minutes ago, Steveyg777 said:

Yes, i am experiencing jerky motion at times. Hopefully i can replace the pedal and all will be fine. I'll keep you posted.

Steve good shout mate , please don’t jump to any conclusions until checking the wiring going into the pedal 

[Steveyg777]

Ok. I'll let the mechanic know. Thanks 

[Steveyg777]

The mechanic has sourced another pedal (pretty sure its a skoda pedal):

 

£140 plus vat plus 30 plus vat fitting 
Need couple days to order it

 

what does anyone think? should i say yes or try to discover if it is another problem causing this? Not sure what to do now lol

[Steveyg777]

as no one replied and i needed to give the mechanic an answer i've told him to order and fit it. i just hope that it works!

[Cropzy]

It could be exhaust valves. They are known to go as well.

[Ootohere]

@CropzyHas there been a single member in here that has had exhaust valve issues with a Euro 5 1.2 TSI in the past 13 years? 

 

@Steveyg777were the spark plugs taken out and checked?

[EnterName]

On 20/06/2023 at 07:18, Steveyg777 said:

i don't thrape it.

I haven't heard this word used for quite a while and I don't think I've ever seen it written down before.

It's a good word, I'm not sure why it stopped being used.

[sepulchrave]

1 hour ago, EnterName said:

I haven't heard this word used for quite a while and I don't think I've ever seen it written down before.

It's a good word, I'm not sure why it stopped being used.

 

Because it contains the word 'rape' and could be misheard is my deduction.

[EnterName]

20 minutes ago, sepulchrave said:

 

Because it contains the word 'rape' and could be misheard is my deduction.

Yeah, maybe. I guess a lot of the Big Brother content filters may have put a stop to it too.

I still think it's a good word and I'm glad to hear it's still in use. 👍

[Jocko]

6 hours ago, EnterName said:

I haven't heard this word used for quite a while and I don't think I've ever seen it written down before.

Probably because it is not a word from the Cambridge English Dictionary. Urban dictionary, yes.

Edited 22 June, 2023 by Jocko

[Steveyg777]

On 22/06/2023 at 02:35, toot said:

@CropzyHas there been a single member in here that has had exhaust valve issues with a Euro 5 1.2 TSI in the past 13 years? 

 

@Steveyg777were the spark plugs taken out and checked?

@toot no he didn't check the spark plugs.they were only changed no more than 2 years ago and i don't do tons of miles. I looked at spark cable 3 and it has an extra plastic house around it, not sure if that can be classed as armour?

 

On my journey today i stifled the accelerator about side to side to try and get the epc to come on (if it is the pedal) but it didn't. It seems like it is only after maybe 5 minutes that it triggers. Would this suggest over heating somewhere as the trigger?

 

In thinking about idling it for about 5 minutes tomorrow to see if it still triggers with low demand placed upon the engine for that length of time to see if it takes longer to trigger.

 

Has anyone looked at the data i posted? Can they interpret it as being the pedal?

[thomasaspin]

https://www.yourmechanic.com/article/p0222-obd-ii-trouble-code-throttle-pedal-position-switch-sensor-b-circuit-low-input-by-andrew-quinn

[Steveyg777]

3 hours ago, thomasaspin said:

https://www.yourmechanic.com/article/p0222-obd-ii-trouble-code-throttle-pedal-position-switch-sensor-b-circuit-low-input-by-andrew-quinn

Interesting. That doesn't suggest replacing the pedal. Am i right in assuming a new pedal would also come with a new sensor, throttle body and ecm fitted to it or is it literally just a chunk of metal?!

[thomasaspin]

The pedal does have a position sensor on it but so does the throttle body which is on the engine you can pick the throttle bodies up second hand relatively cheap on eBay if it isn’t the pedal that is at fault if you get the part number off it I will be able to check on eBay what the going rate is on them 

[Steveyg777]

I explained to the mechanic about there seeming to be so many causes of the problem so he had the car back to diagnose further. He concluded that it was, i can't remember the exact name, possibly the ecm box - a box with some websites in and i think an epc that communicates with the computer.
 

I've got to take it in this coming Friday to get done. He claimed this box will cost about £300! So I'm more ****ed off because of the costs understandably. And it makes me question whether he is correct, in the hope of Cheaper fix of course. Maybe it is only a sensor that had failed within the box and he is just replacing the whole box to make sure the problem is fixed? I don't know.

 

Additionally, i cleaned the throttle body yesterday. You should have seen it! Underneath the tb is a pool of oil! This has dirtied the tb. There is also oil that has got onto the engine area. Possibly through a pipe which looks like some sort of overflow outlet (see photos).

 

For a few years i have smelt what smells like fuel or exhaust fumes coming, through the interior fans, quite quickly after idling in a static position or reversing. I thought it was part of the exhaust that needed tightening up and I'm sure it was made better when i asked a previous mechanic to tighten things up before. Lately I've not smelt it so much but now I'm wondering if it is this pool of oil?

 

Could this oil be too do with the pcv valve (i think that's what is called)?

 

What do people think about it all after reading this info and looking at the photos?

 

 

Sorry Tb top

Dirty tb bottom 

Underneath tb with oil pool

Done kind of outlet, possibly how the oil has come out onto the engine?

Oil all over the engine

Edited 3 July, 2023 by Steveyg777

[Steveyg777]

@thomasaspin @toot @EnterName @Jocko @sepulchrave @Cropzy 

 

Any ideas guys?

[sepulchrave]

36 minutes ago, Steveyg777 said:

@thomasaspin @toot @EnterName @Jocko @sepulchrave @Cropzy 

 

Any ideas guys?

 

I reckon the PCV oil separator is clogged up.

[Steveyg777]

Is that something i can clean or replace myself and do you know a rough cost?

 

Also does the mechanic sound correct in thinking is that box?

Edited 3 July, 2023 by Steveyg777