Hi guys, I drive a VW Scirocco but I have been recommended this forum as a good place to ask for help.

 

The car is standard, apart from lowering suspension springs.

 

I have two lights coming on the dashboard - one for the exhaust, and a coil-shaped one. Checked the handbook, and I've done a ROSS-TECH diagnostic last night on it. The following code has come up:

 

009258 - Exhaust Gas Temperature Sensor; B1 S3 

               P242A - 000 - Malfunction - Intermittent - MIL ON

             Freeze Frame:

                    Fault Status: 10100000

                    Fault Priority: 2

                    Fault Frequency: 255

                    Reset counter: 255

                    Mileage: 109931 km

                    Time Indication: 0

                    Date: 2000.00.00

                    Time: 14:58:16

 

             Freeze Frame:

                    RPM: 1725 /min

                    Speed: 84.0 km/h

                    Voltage: 13.91 V

                    Temperature: 82.8∞C

                    Temperature: 486.0∞C

                    Temperature: 930.0∞C

                    Temperature: 216.0∞C

 

It duplicates the code again with same fault code etc, slightly different temperature readings but all in all, identical. Initially, my thoughts was on a faulty lambda sensor. Any idea?

 

The second one for suspension:

 

01769 - Sensor for Vehicle Leveling; Front Right (G289) 

            010 - Open or Short to Plus

             Freeze Frame:

                    Fault Status: 01101010

                    Fault Priority: 2

                    Fault Frequency: 106

                    Reset counter: 59

                    Mileage: 109879 km

                    Time Indication: 0

                    Date: 2000.00.00

                    Time: 19:55:59

 

 

The main problem we have is the exhaust light. My MOT is due next week but booked for this week, so we're trying to sort it before it goes ahead. I have access to a workshop and tools so we'll be able to do it ourselves, just advice needed please as to what the problem actually is. 

 

The coil light only comes on once the car is driving, and usually when we're parked up, the fan in the engine is going double-time. We thought maybe there was a fault with the engine thinking it's overheating? Maybe it's related to the exhaust sensor? 

 

Thanks guys, L

 

 

Then your EGT is goosed, I had this on my octavia a couple of years ago, not a huge expensive fix if its the one on the DPF.

2) I didn't think that a Scirocco had ride-height levelling? Certainly it won't if it doesn't have plasma discharge headlights.

Then your EGT is goosed, I had this on my octavia a couple of years ago, not a huge expensive fix if its the one on the DPF.

 

By EGT, you mean the lambda sensor? or is there a separate sensor to that?

 

And what do you mean by "if it's on the DPF" 

 

Thanks for your help.

By EGT, you mean the lambda sensor? or is there a separate sensor to that?

 

And what do you mean by "if it's on the DPF" 

 

Thanks for your help.

Diesels dont have Lambda sensors, I dont think. The DPF - Diesel Particulate Filter - has a number of temperature and pressure sensors in it. The DPF can be seen down the back of the engine, with 2 or 3 sensors plugged in the top. Or at least thats how it is on my Octavia. I think I paid £152 for a new one fitted a couple of years ago, but they are £70 odd quid, and an easy fit, I think. never done it and my memory may be cloudy, but thats how I think it is.

Diesels dont have Lambda sensors, I dont think. The DPF - Diesel Particulate Filter - has a number of temperature and pressure sensors in it. The DPF can be seen down the back of the engine, with 2 or 3 sensors plugged in the top. Or at least thats how it is on my Octavia. I think I paid £152 for a new one fitted a couple of years ago, but they are £70 odd quid, and an easy fit, I think. never done it and my memory may be cloudy, but thats how I think it is.

Diesels do have lambda sensors, but thanks for your help anyway.

First fault could be a faulty EGT sensor. There are 4 in total - one is pre turbo, two are on the DPF itself and one is after the DPF.

 

Second fault - does your 'Rocco have adaptive damping?

First fault could be a faulty EGT sensor. There are 4 in total - one is pre turbo, two are on the DPF itself and one is after the DPF.

 

Second fault - does your 'Rocco have adaptive damping?

So is it a case of trial and error for finding the faulty sensor? Or is there a more likely answer?

What's adaptive damping?

Looking more closely, it's Bank 1 Sensor 3 - the error code tells you that (B1 S3).

 

If you're not sure about EGT sensors and replacement, you're better off getting a garage or mechanic to look at this more closely - with a view to replacing the sensor. I'd certainly order one in, but you'd need to check the wiring to and from the sensor as well.

 

Adaptive damping gives you a choice of suspension setup - typically standard/comfort/dynamic depending on the vehicle. It just seems odd to me that all you've done in modification terms is suspension springs, and you have that error.

 

I don't know the Scirrocco in detail, but pretty sure adaptive suspension modes was an option, but not clear from what Model Year onwards.

Looking more closely, it's Bank 1 Sensor 3 - the error code tells you that (B1 S3).

 

If you're not sure about EGT sensors and replacement, you're better off getting a garage or mechanic to look at this more closely - with a view to replacing the sensor. I'd certainly order one in, but you'd need to check the wiring to and from the sensor as well.

 

Adaptive damping gives you a choice of suspension setup - typically standard/comfort/dynamic depending on the vehicle. It just seems odd to me that all you've done in modification terms is suspension springs, and you have that error.

 

I don't know the Scirrocco in detail, but pretty sure adaptive suspension modes was an option, but not clear from what Model Year onwards.

My boyfriend has a workshop and owns a motorsport business, but I need to learn so he's put me on the job of figuring out what needs done! 

 

It does, it has a choice of standard, sport and comfort. But to be honest, since the replacement suspension was put in, I've not noticed a difference between the modes so I don't know if that has had an effect on the dampening... The suspension will be getting replaced back to standard next year so hopefully if there is any problems, that fault will be rectified then too.

 

Thanks for your help, will look up B1/S3 sensor. L

OK, in that case it could be that in replacing the springs, one of the sensors has been knocked for the dampening.

 

I would imagine the whole system is tuned to work with standard springs and dampers, which might be why you're no longer noticing any difference between modes, as the spring rates are now completely different.

Looks like you need 2 new parts:

1. an exhaust gas temp sensor, on bank 1 (your engine only has 1 bank) and it's fitted in position 3 (position 1 is pre turbo temp sensor, position 2 is the lambda probe, position 3 is pre dpf temp sensor and position 4 is post dpf temp sensor).

2. A ride height sensor on the drivers side front. It will more than likely be a mechanical level sensor or may even relate to the active damper itself.

Although without your specific engine code this might be not be exact, you have 3 EGT sensors.

To avoid playing "swapatronics" each item should be tested before replacement, the EGT can be checked easily with a multimeter.

This is what the technician is for - they get paid for their knowledge, skills and data :-)