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Author Topic: Parking Sensor System Fault  (Read 127 times)

Offline derekod

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  • Model: Galaxy Mk2
  • Spec: 06 TDI 130 Zetec
  • Region: Ireland
Parking Sensor System Fault
« on: June 11, 2021, 12:02:58 PM »
I have just loaded up vcds lite to check for faults with the parking sensors

I have cleared registered faults and there is one obvious one present

Any indications where I should concentrate looking for the short first

01548 - Supply Voltage for Parking-Aid Sensor
            29-00 - Short to Ground

06 WGR Ford Galaxy

Offline johnnyroper

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  • Model: Galaxy Mk2
  • Spec: 02 tdi 115 ghia
  • Region: South West
  • Country: United Kingdom
Re: Parking Sensor System Fault
« Reply #1 on: June 11, 2021, 12:18:03 PM »
That code relates to rear right sensor most likely the sensor at fault but if you are able try swapping with next one along and see if fault code changes just to be sure before replacing it

Offline SirDavidAlhambra

  • Sir David Alhambra.
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  • Model: Alhambra Mk2 Auto
  • Spec: 2006 1.9 Tdi auto
  • First Name: Dave
  • Region: South East
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Re: Parking Sensor System Fault
« Reply #2 on: June 11, 2021, 10:24:44 PM »
Sounds like it could be a fair bit of hassle, are these sensors easy to replace or does the plastic around the bumper go brittle and crack etc
I drive a Seat Alhambra 1.9Tdi which has 115bhp and an automatic gearbox.

I am happy to help you with all your questions. I am not a qualified mechanic but seem to be better at fixing my car than even the most experienced garages.

I have lots of friends here and very much enjoy talking with you all.

Always remember, a motor car is a serious tool and should be treated with respect. Put your safety first, always.

Offline brianh

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Re: Parking Sensor System Fault
« Reply #3 on: June 11, 2021, 10:35:17 PM »
The only problem your likely to encounter is the socket bit thats stuck to the lower bumper can pull off when you try to remove the sensor from it. But it can be stuck back in place. Access isn't the easiest but can be done without removing anything else.


Offline johnnyroper

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Re: Parking Sensor System Fault
« Reply #4 on: June 11, 2021, 11:28:51 PM »
I found a screw driver to open the retaining clips then hold socket against bumper while pushing sensor from other side released them without issue

Offline brianh

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Re: Parking Sensor System Fault
« Reply #5 on: June 11, 2021, 11:58:58 PM »
That's what should work, though I think mine and been pulled off previously making it more likely to come off again.

Offline derekod

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Re: Parking Sensor System Fault
« Reply #6 on: June 12, 2021, 08:07:29 PM »
That code relates to rear right sensor most likely the sensor at fault but if you are able try swapping with next one along and see if fault code changes just to be sure before replacing it

I just swapped the sensor to check then I got code
01547 - Rear Mid -Right (G205)
31-00 Open or short to ground

So it is looking like that sensor

But the issue that I have and I do not know if it is that I am using Shareware version of VCDS Lite
When I cleared the code it just reverts back to the original code

01548 - Supply Voltage for Parking-Aid Sensor
            29-00 - Short to Ground

Is the shareware version limited that much that I can't read the codes with confidence?

Offline brianh

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Re: Parking Sensor System Fault
« Reply #7 on: June 12, 2021, 08:44:18 PM »
You should be fine with the shareware version, if it won't do something it will say its a locked function. It does show fault code with shareware version tagged onto it in certain cases, but this is an extra message thats all.

You might find the code changes completely if you unplug your suspect sensor and leave it disconnected. Provided it then loses the short to ground message you should be fine I think. It may be indicating a wiring fault of course, which may change as the wire moves.

I'm not sure offhand where the pdc module lives, I seem to remember some of them being under the passenger seat, and can fall victim to being flooded by the rear washer leaking, but that may be earlier models than yours?

Offline derekod

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Re: Parking Sensor System Fault
« Reply #8 on: Today at 10:26:43 AM »
I tried unplugging the sensor which I thought was faulty but it does not function normally with that one removed
Tried removing all 4 rear sensors and the front do not operate
Still shows this fault
01548 - Supply Voltage for Parking-Aid Sensor
            29-00 - Short to Ground

But I still think it was weird when I just swapped the right rear with the inner right rear it showed

01547 - Rear Mid -Right (G205)
31-00 Open or short to ground

When I cleared the code it reverted to

01548 - Supply Voltage for Parking-Aid Sensor
            29-00 - Short to Ground

The control module is under the passenger seat I must remove it and check the connections

If the above reading had stayed on Rear Mid-Right (G205) after clearing the codes I would just order up a sensor but the fact that it didn't is annoying which is pointing to another fault and the chances of two faults occurring at the same time seems a little slim.

I was full sure when I had replaced a faulty front sensor previously that the other 3 worked fine when the faulty one was unplugged.

But this is not the case at the moment.

Offline johnnyroper

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Re: Parking Sensor System Fault
« Reply #9 on: Today at 11:06:49 AM »
I would get the meter on the wiring loom and check it out,measure from control unit back to each sensor plug.

Offline SirDavidAlhambra

  • Sir David Alhambra.
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Re: Parking Sensor System Fault
« Reply #10 on: Today at 11:10:48 AM »
Yes, and make sure u make notes as u go along as sometimes there is a lot to keep track of!
I drive a Seat Alhambra 1.9Tdi which has 115bhp and an automatic gearbox.

I am happy to help you with all your questions. I am not a qualified mechanic but seem to be better at fixing my car than even the most experienced garages.

I have lots of friends here and very much enjoy talking with you all.

Always remember, a motor car is a serious tool and should be treated with respect. Put your safety first, always.

Offline brianh

  • *
  • Posts: 1029
  • Thanked: 184
  • Model: Galaxy Mk2
  • Spec: 2001 2.3 Ghia LPG
  • First Name: Brian
  • Region: South East
  • Country: United Kingdom
Re: Parking Sensor System Fault
« Reply #11 on: Today at 03:22:00 PM »
It might also be worth unplugging the rear section of the loom and clearing codes to see if the short code disappears (will be replaced with another code, but if its replaced with open circuit messages at least you have narrowed down the area the short is located in)

 

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