PerthDisco
Member Since: 21 Jun 2010
Location: Perth
Posts: 87
  
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| Suspension C1131-92 (AF) Air supply - Component failure |
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Hello All
I have this intermittent random suspension fault that pops up occassionally during normal road driving in my MY08. Unlike normal suspension faults with specific information on what's wrong this one is a mystery.
The compressor is rebuilt and functioning well as are the valve blocks. There's no sagging or leaks.
I recently replaced the centre valve block with a fresh one to see if that was it (Air Supply) but it came back again today same fault. The system was all clean and nice looking at the previous centre valve block internals.
30 seconds after getting the C1131 fault the follow U code was logged:
Terrain Response
U0421-94 (27) Invalid data received from ride level control module - Component failure - unexpected operation
I think this is just the cascading codes from the first C1131-92 fault.
Not sure what next step is if to change the compressor again or just wait till worse codes appear?
TIA
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 1st Jul 2024 9:11 am |
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grzesiul
Member Since: 11 May 2008
Location: UK
Posts: 6400
  
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C1131-
92
Air Supply -
Performance or
incorrect
operation
Air spring or pipe air leak
Suspension air supply
unit failure
Refer to the relevant section of the workshop
manual and test the air suspension system
for air leaks
Using the manufacturer approved diagnostic
system, check for suspension air supply unit
related DTCs
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| 1st Jul 2024 9:42 am |
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grzesiul
Member Since: 11 May 2008
Location: UK
Posts: 6400
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have you cleaned exhaust valve upon compressor rebuild? and blown all the air ducts?
I found  loads of white powder everywhere from dryer beeds deterioration blocking some chanels and therefore i was getting some codes related to underperforming system
good luck
G
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| 1st Jul 2024 9:43 am |
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