Hi,

1st post here…looking for some help/advice with a fault i have with my parking sensors & reverse camera.

I got my front bumper resprayed a couple of weeks ago & the sensors/camera have not worked since. I took it back to the guy who done the work & he took the grill & drivers side headlight off & discovered he hadnt connected the multi plug back together. He connected it back up & it still didnt work (was all working fine beforehand). He said that was the only thing he disconnected & he didnt touch the indvidual front sensors.

Theres a guy who lives on my street who is into his cars & he plugged his computer into to check for codes. It came up with fault codes all relating to the front sensors (will try & attach a pic). He reckoned the plug wasnt put back together properly. I had a chance tonight to remove the grill & headlight myself to check the connection & it was clicked in properly.

When i start the engine there is the long beep sound & the msg on screen about contacting the dealer.

Is there anything thats needs reprogrammed after it being disconnected? Or anything someone could think of that i could try?

Click image to enlarge

need to clear the codes, put the car in drive & handbrake off. Back to park.
then rescan the codes

Cool thanks Andy, i will try & get them cleared then see how i get on with that. Do you reckon it should all work after doing that?

no need to get the codes reset. once the fault is found the problem will reset itself.

look for a broken wire on the loom, you will need to reomove both headlights and grill, then the 6 or so 8mm head screws along the top of the bumber then you can just get the bumper away enough to access the loom. sounds like the loom was dodgy and has broken or the paint is too thick on the sensors to me.

No. It won't make it work.
It will clear the codes from having the loom unplugged, and hopefully leave you with one or two real codes

I would double check the connectors again, apart from the headlight connector and two other connectors ( white and green I think), which are quite visible and live behind the headlight itself there is another,, no so easy to see which normally hangs in the void below the headlight. It isn't that easy to spot and is quite small compared to the others,,, it is also very easy to push it together the wrong way round as it is circular, you need to look at the male and female parts to see how the pins are aligned before just shoving it together.


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Thats great, thanks very much for all the advice…much appreciated. Will give it all a try this week & see how i get on

If he didn’t disturb the sensors, did he repaint the bumper with them still installed instead of separating them? 2019 5.0 SC SVA (Current)
2012 5.0 SC AB. Sadly written off by a campervan
23 plate Focus ST (Current)
1942 VEP Ford GPW Jeep (Willys) (Current)
1943 Whites M16 Halftrack (Current)
16 plate Eurofighter Typhoon, 2 x Eurojet engines with 20,000lbs thrust each. 1380mph

The DTCs are incomplete (LR diagnostics would have an additional 2 numbers) but one code suggests individually that there is a short to open, short to power or corrosion damage. Another suggests an internal fault but as the fault is with all 4 at the same time, you either have a common power or Earth issue (check fuse) or I suspect there is possibly too much paint on the cover and/or the paint has bonded the sensor to the bumper (I think they should be free to vibrate slightly). Obviously the DTC doesn’t make reference to painting as it’s not an expected fault.

It could be worth swapping the rear sensors on to the front wiring to aid diagnostics. 2019 5.0 SC SVA (Current)
2012 5.0 SC AB. Sadly written off by a campervan
23 plate Focus ST (Current)
1942 VEP Ford GPW Jeep (Willys) (Current)
1943 Whites M16 Halftrack (Current)
16 plate Eurofighter Typhoon, 2 x Eurojet engines with 20,000lbs thrust each. 1380mph

As Chris said all those codes have another 2 digits associated with them, as there are four codes with the same first set of number/letters B1B you actualy have a option of 12 fault codes, however they all state the same possible causes, wiring harness or internal fault in sensor, unlikely 4 sensors would fail at the same time, unless as suggested they have excessive paint on them, there is actualy a L/R instruction how to paint the sensors. I think again as suggested I would start with the plug to make sure it is push fully home and no damaged pins.

Cheers
Col

Yeah it was painted with the sensors still in place, he said the only thing he disconnected was the plug under the drivers headlight (although he forgot to plug it back in).

Ive checked them for paint on the sensors but doesnt seem to be that. I got the codes wiped tonight then rescanned them…only showed 2 codes this time, 1 for the internal right sensor & 1 for the internal left sensor. Going to have a shot at removing the bumper enough to get access to them to check the wiring. I can understand 1 going faulty but surely 2 at the same time would be rare? Especially when all was working perfectly

Which fuse is it, can’t see it mentioned in my manual?

Thanks

Try fuse No.36 passengers compartment fuse box.

Cheers
Col