Adaptive Cruise Control 01542 Yaw Rate Sensor (G202)

Cupra Belfast

Active Member
Jun 11, 2016
307
39
I've been having the front assist unavailable error pop up relatively regularly when making a sharp right to come off a dual carriageway, on a downhill incline, moving across into the far lane of a two lane slip road. It happens other places from time to time, but I pass that place a few times each week, and it relatively regularly happens there, with the sudden lateral position shift of the vehicle seeming in my mind to trigger it. Either keying off an on again, or waiting a couple of minutes, seems to rectify things/regains front assist. I've had the car in to Seat, after scanning with a Ross Tech VCDS cable to see a fault with the dist reg module. They seem to think it's because the car is suddenly picking up the wall at the side of the road then suddenly losing it again from the line of sight of the unit, confusing it. This could well be the reason, although if it is the design is fairly poor. It sounded a plausible enough explanation to placate me, for a bit anyway.

I recently purchased a Carista dongle for my dad, and decided to scan my car with it, to yield the following error message:

Adaptive Cruise Control

01542 Yaw Rate Sensor (G202)

In my mind a sudden lateral movement would be precisely how to invoke a fault in a faulty Yaw Sensor, be it that it perhaps isn't situated in place properly, a connection being lose, or perhaps a hardware fault?

I've cleared it out this morning to see if it returns

After having been sent off three times by Seat, with them suggested I'm wasting their time, in as polite as possible a manner to do so, I am reluctant to return if this is something that isn't a fault, but instead the symptom of a poor design. My car's out of it's three year warranty on the 16/06/2018, so am considering if there is a fault and after having it in three times already, that if there is a fault that has been downplayed, they would still be liable? Has anyone any experience/knowledge/expertise regarding times front assist fails, other than during poor weather etc. As in during normal driving? Or any knowledge regarding Yaw sensor failure in MQB cars, or what could trigger a fault code erroneously? Lastly, does anyone know if the sensor is located under the seat, or under the wheel or some other place? I can see instructions for replacing older VAG Yaw sensors online, but the MQB seems to be a little hard to put my finger on.

Cheers in advance for any assistance
 

Cupra Belfast

Active Member
Jun 11, 2016
307
39
I'm now returning to this. The front assist not available error came up again on the way home from work, when weaving left to right to left quite rapidly, and on a scan with the Carista the Yaw sensor fault is there again.
 

Nickbrapp

Active Member
Apr 16, 2018
32
1
Can’t Help with that one, but I have a acc issue as well, mine comes up as unavlaible quite a lot and when scanned with Carista is comes up with Acc fault - headlight level too low
 

Blowski

Cupra 280 DSG
Mar 23, 2018
420
200
I had this a while ago. I don’t remember anything specific for it to happen. I reset it and it hasn’t come back since.

As you say, maybe a design fault with the radar set slightly back in the grill. Most are flush with the grill now and some VW now have it built in to the badge
 

Cupra Belfast

Active Member
Jun 11, 2016
307
39
Cleared it again and it's not back since, although it's just been a drive to get valeted & waxed today. It probably is a field of vision compromise, as of the sensor being set back into the bumper being put down to a yaw sensor fault as nothing else is out of kilter. There are none of the normal symptoms of yaw sensor failure. Mildly annoying. Still, I never rely on the systems, but like the thought that they're there, most of the time.
 

Ibizaκιας

Newbie
Feb 6, 2006
170
0
Greece - Cyprus
Hey guys!! I know it's been a while and you probably don't remember that issue but just in case, how can I fix this problem on a Seat Ibiza Cupra 6k2? Where is the Yaw Rate Sensor located?
I'm facing the below fault code: 01542 - yaw rate sensor (g202)

any answer would be amazingly helpful

in the picture below you see 3 faults. only the first one remains..
image0 (8).jpeg
 
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