Originally Posted by philwarner

I just recieved my i930 and read the air suspension codes and have a C2303 (reservoir plausibility error) and C1830 (compressor relay circuit error)

Anyone know a generic part number for the compressor relay from O'Reillys or other local parts houses?

I'll try replacing the relay first and if that doesn't eliminate the air suspension fault message I have Andy's compressor piston ring kit in the glove box.

Originally Posted by Don B

Hi Phil,

The original Jaguar air suspension relay part number was LJA6703AA and the new superceded part number is C2P11192. The Jaguar list price shown at jaguarmerriamparts.com is $12.25, and their price is $10.67, which is a downright bargain in Jaguar economics.

On the schematics, it looks like a fairly conventional 40 amp 5-terminal Bosch-/Hella-style cube relay with a quenching resistor across the coil to suppress voltage spikes, so if you take the relay to your local auto parts stores they can probably match it up for you.

BTW, there are 5 of those same relays in the front power distribution fuse box, so before you buy a new relay, follow abonano's suggestion and swap another one of them into the R1 position to rule out the air suspension relay as the cause of your problems.

Cheers, Don

Originally Posted by trosty

I would just go ahead and fit bagpipeandys compressor kit anyway.

Originally Posted by Don B

Hi Phil,

The original Jaguar air suspension relay part number was LJA6703AA and the new superceded part number is C2P11192. The Jaguar list price shown at jaguarmerriamparts.com is $12.25, and their price is $10.67, which is a downright bargain in Jaguar economics.

On the schematics, it looks like a fairly conventional 40 amp 5-terminal Bosch-/Hella-style cube relay with a quenching resistor across the coil to suppress voltage spikes, so if you take the relay to your local auto parts stores they can probably match it up for you.

BTW, there are 5 of those same relays in the front power distribution fuse box, so before you buy a new relay, follow abonano's suggestion and swap another one of them into the R1 position to rule out the air suspension relay as the cause of your problems. Cheers, Don

Originally Posted by philwarner

O'Reillys looked at my relay from R1 and said they had to order what their computer said was the correct relay for the application from another store, but when I went back to pick it up it had two wide spades that would not fit into the R1 position in the front relay/fuse box. The fellow ran the computer again and said it was what was called for, but after looking at my compressor relay again he found one in the back that matched the normal spades and 40 amp rating of the ++05155 2 B 12V 40A BUTZA brand relay that was in there. It was a MasterPro 2-DR1071. I put it in, but the darn thing was made in China - only the box was printed in the USA. It was $14.22 with tax.

My R1 socket only has contacts in four of the five slots while some of the other positions have five contacts in the socket. I have to assume that a four spade relay is correct for R1 since its fifth slot does not have any contacts in it.

I am still getting a C1830 - "Air suspension compressor relay circuit failure" along with the C2303, so I guess I need to check the connections at the compressor as well as replace the piston ring with Andy's kit. You'd think there could be a more specific description than "Air Suspension Reservoir Plausibility Error." Maybe something like, "Dude, the bloody pressure in the reservoir did not come up fast enough, so check the bloody compressor."

Originally Posted by abonano

Did you clear the codes then start the car? The codes will remain even if the issue is rectified. They must be cleared...

Originally Posted by RG XF Sportbrake

Hello, I just picked up this thread. I have a XF sportbrake 2.2 diesel 2013. I need to locate the suspension compressor relay, can anyone help please.

Thankyou.