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All the gear no idea - Suspension fault code
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charlietortoise
 


Member Since: 29 Oct 2011
Location: Staffordshire
Posts: 511

2010 Discovery 4 3.0 TDV6 HSE Auto Barolo BlackDiscovery 4
All the gear no idea - Suspension fault code

Hi, I am getting a suspension fault with code C1A27-12(28 ) Compressor Circuit - General electrical failure short to battery.

Usually happens after a ride height change.

I can find info for the code C1A27-14 on here but not the 12.

Does anyone have experience with this code and can point me to the fix.

Thanks Discovery 4 3.0 HSE 2010 year. I like it a lot. Now with winch 😂  
Post #220363919th Jan 2021 1:27 pm
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Admirable
 


Member Since: 19 Jul 2015
Location: Fife
Posts: 1039

Ukraine 2007 Discovery 3 TDV6 XS Auto Zermatt SilverDiscovery 3

Can't help with the fix but the code refers to:

Compressor circuit,

Compressor voltage present when compressor not requested

Air compressor harness wiring short circuit to power

Air compressor relay fault

Air compressor control module failure


Personally I'd start with changing the relay?  
Post #220364819th Jan 2021 2:35 pm
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charlietortoise
 


Member Since: 29 Oct 2011
Location: Staffordshire
Posts: 511

2010 Discovery 4 3.0 TDV6 HSE Auto Barolo BlackDiscovery 4
Relay

Thanks that makes sense seeing the statements that you give. Also the fault light does not come on until a short while after the height change, so it would make sense that it is sticking on and causing it to overrun. I have ordered a relay today. Thanks for that. Discovery 4 3.0 HSE 2010 year. I like it a lot. Now with winch 😂  
Post #220365319th Jan 2021 3:12 pm
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Admirable
 


Member Since: 19 Jul 2015
Location: Fife
Posts: 1039

Ukraine 2007 Discovery 3 TDV6 XS Auto Zermatt SilverDiscovery 3

You might be able to swap a compatible relay from elsewhere in the fusebox to confirm?

EDIT: need to type quicker Rolling Eyes  
Post #220365519th Jan 2021 3:15 pm
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charlietortoise
 


Member Since: 29 Oct 2011
Location: Staffordshire
Posts: 511

2010 Discovery 4 3.0 TDV6 HSE Auto Barolo BlackDiscovery 4
Relay

It was less than £8 of Amazon delivered Monday so I am ok with that. Thanks for the tip though. Discovery 4 3.0 HSE 2010 year. I like it a lot. Now with winch 😂  
Post #220372719th Jan 2021 8:29 pm
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charlietortoise
 


Member Since: 29 Oct 2011
Location: Staffordshire
Posts: 511

2010 Discovery 4 3.0 TDV6 HSE Auto Barolo BlackDiscovery 4
Still got the problem

Hi all, so I changed the relay but I am still getting the problem with the suspension fault.

I had a look at the live values and the compressor was getting hot, up to 102 degrees then the fault light appears on the dash and the compressor must cut out as the temp then starts to drop.

Tried it three times and on the third go the compressor topped out at 72 degrees and no fault occured.

I took a look at the ride height and sensors see pictures and can see that the rear right is lower and also low on volts so I was thinking this may be a clue.

I also got a new message which I am not getting the code now instead I have a new code which is
C1A20-64 which is pressure increas too slow when filling the reservoir.

If anyone has first hand experience of this and can guide my thinking I would find it very useful.





 Discovery 4 3.0 HSE 2010 year. I like it a lot. Now with winch 😂  
Post #220526025th Jan 2021 4:33 pm
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eightfoot
 


Member Since: 12 Apr 2015
Location: sunny essex
Posts: 806

United Kingdom 2005 Discovery 3 TDV6 S Auto Bonatti GreyDiscovery 3

sound like you have a air leak or your compressor needs the air dryer cleaning out
,there's plenty info on this subject use the power of the search button all will become clear Thumbs Up please excuse any grammer/punctuation mistakes,i'm thick,thankyou
current vehicles 2005 d3 2013 d4  
Post #220527325th Jan 2021 5:07 pm
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Admirable
 


Member Since: 19 Jul 2015
Location: Fife
Posts: 1039

Ukraine 2007 Discovery 3 TDV6 XS Auto Zermatt SilverDiscovery 3

C1A20-64

Compressor fault

Reservoir pipe air leak

Reservoir air leak

Gallery pipe air leak

Intake filter blocked/restricted

Air suspension intake silencer blocked/restricted

Corner valve stuck open

Pressure sensor fault  
Post #220527525th Jan 2021 5:10 pm
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