Hi All,

I'm trying to work out if I have a faulty pressure sensor or tired compressor. Could someone with an IID or anything else that can read the gallery pressure give me a reading - I need something to baseline on as the fault is intermittent  Land Rover Addict
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2009 5.0V8SC Autobiography
2006 4.2V8SC Autobiography
2004 4.4V8 Vogue

What are the symptoms ?

Intermittently I get the code for C1A20 Pressure increases too slowly.

I know it's either the compressor or the sensor. I've reflashed the ECU for the compressor and it's made to difference. However I get random values from the live view - sometime 1500 (error will occur) and sometimes 300 (no error and all is well for days and days)..... I really need to know what the sensor should be reading when sat at normal ride height with the compressor not running, if that makes sense. Land Rover Addict
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Previous
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2009 5.0V8SC Autobiography
2006 4.2V8SC Autobiography
2004 4.4V8 Vogue

ok , just thought it may have been getting the pressure trapped due to choked exhaust silencer , sorry can't help with your issue

My IID reads about 172 to 186 bar for an 02 reg.

186 BAR

are you sure???

I suppose it could be psi, I didnt take much notice and with the pixels missing it wasnt obvious.

It's PSI but the earlier ones are different to yours...

From Rave for yours

Pressures:
Normal - Front
800 to 1000 kPa (8.0 to 10.0 bar) (116.0 to 145.0 lbf/in²)
Normal - Rear
500 to 800 kPa (5.0 to 8.0 bar) (72.5 to 116.0 lbf/in²)
Air supply unit:
Comprises a piston compressor, 12 volt electric motor, solenoid operated exhaust pilot valve, pressure relief valve, air dryer unit and two silencers
Controlled by
Air suspension control module
Working pressure
1450 kPa (14.5 bar) (210.3 lbf/in²)
Maximum pressure
2700 kPa (27 bar) (391.6 lbf/in²)
Air reservoir:
Volume
10.2 liters (622 cu.in)
Nominal working pressure
1440-1550 kPa (14.4-15.5 bar) (208.85-224.8 lbf/in²)
Maximum operating pressure
2200 kPa

Good luck...  Pete
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2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold
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Cheers - time to order a refurb kit then! Land Rover Addict
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Previous
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2009 5.0V8SC Autobiography
2006 4.2V8SC Autobiography
2004 4.4V8 Vogue