Hi, have a RRS 2014 model that came up today with a yellow triangle in the instrument, and only normal ride height was available, Read out this error code 1CA20. Anyone who can give some tips on what could be wrong and where to start troubleshooting. Thanks in advance

Is the code correct,,, couldn't be C1A20-xx ?? Certainly compressor related,, what brand of reader did you use 2010 RRS, TDV8
bali Blue / colour coded
side steps / flappy paddles
black perforated leather
22" overfinch
heated everything, TV,fridge ...... now with gold calipers and mud flaps !( black mud flaps that is) !!
Many years ago,,,,, 1955 series 1 landie , sometimes wish I had kept it

Hi, used a Launch tester, will try with our Texa at our garage, to compare the error code

The code generally says that the pressure in the reservoir is rising too slowly when the compressor is running. For me when this happened in my D4, the cure was compressor replacement.

But it could be a leak somewhere for instance.

Today I read out the same code on our Texa, started the car on our lifting jack and then heard a hiss under the car on the right side, it turned out that there was a leak in the nipple into the air tank, I think this is the cause of this problem, we'll see if we can get this sealed tomorrow

Hello again, it turns out that there is a rusty hole in the air reservoir itself as well, where can I buy a new tank

Site sponsor,, advancedfactors bound to have one 2010 RRS, TDV8
bali Blue / colour coded
side steps / flappy paddles
black perforated leather
22" overfinch
heated everything, TV,fridge ...... now with gold calipers and mud flaps !( black mud flaps that is) !!
Many years ago,,,,, 1955 series 1 landie , sometimes wish I had kept it

Then I ordered a new air tank, let's hope that solves the problem

Hello again, there was a new air tank in place, deleted all fault codes, long drive and everything works again as it should. Delicious, Have a nice weekend everyone

Hello again, we have used the car for 2 days without problems, but today a yellow triangle appeared again. Then took and read out the following error codes: U0001, B1D02, C1A13, C1A99, U0421 Anyone who can have an idea what could be wrong, Thanks and suggestions are welcome

When I had the same inital fault code as you (C1A20) I needed to change the compressor. After having replaced the compressor I directly received the C1A13 code. It turned out that the exhaust valve of the new compressor was sticking, which evidently was a common issue. So I swapped the exhaust valves between the old and the new compressor and then everything worked fine.

But you also have the C1A99 which indicates a problem with the pressure sensor circuit. The C1A13 could be a consequential fault due to the system not being able to read the pressure properly.

The U0421 just says that the Suspension System has received invalid data, i.e. sensor values does not add up which is logical considering the other two faults. The other fault codes are unrelated to the Suspension System.

So the sensor is probably the reason or otherwise the system has an inability to vent the pressure when needed.

Hello again, have now driven for a few weeks without any error codes, but yesterday the yellow triangle came on again, I read out error codes today, and the code that is there all the time and does not go away is C1A99, does anyone have any suggestions as to what it is may be

Google says it is Air Suspension Pressure Sensor. Loads of info about it but not familiar myself.

Where is the sensor located ?

Have then had the codes read out at a workshop, and it shows CA99-1C, Any tips on what it could be

Last edited by 41664166@online.no on Sat Jan 13 2024 3:24pm. Edited 1 time in total