Jaguar Forums - Jaguar Enthusiasts Forum - XF (X260)

Engine system fault, parking brake fault, dsc not available

XFOwner_in_Florida — Sun, 24 May 2026 03:50:09 GMT

My 2009 XF is in Limp mode and I am seeing these error messages; Engine system fault, parking brake fault, dsc not available. I'm also seeing P2135 TPS/Pedal position low voltage when I use my OBD2 scanner. Someone told me to replace the throttle body, has anyone seen this problem before?

2 Piece Oil Ring Fitment

WizardEngineering — Sat, 23 May 2026 11:11:38 GMT

Hello, I am new to the site, so apologies if its the wrong area to post in.

I am in process of rebuilding a 2.0d Ingenium Engine, the Block has been rebored by 0.5mm to allow fitment of the new 83.5mm pistons / rings.

I can't seem to get the right compression on the expander Wavey Ring. Has anyone had this issue. The end cap on the rail is way to big and the expander is preventing compression. Any advise is much appreciated.

Thanks.

Charging System Fault

MacDaddy96 — Thu, 07 May 2026 22:14:20 GMT

Hello everyone!

I just bought my 16 Jaguar XF about two years ago. Drove fine. Then I started having electrical issues.

All at once I got errors on my dash saying that ABS, drive modes, cruise control, and electronic parking brake were all unavailable. Battery was kind of old so I replaced that, didn't fix the problem. Still drove it as everything seemed fine, battery voltage was normal both off and running. Now I got "charging system fault". My first thought was a bad alternator, I replaced it. While doing so I found that I had an oil leak that I couldn't quite locate, but it was leaking into the alternator. But in the end replacing the alternator didn't fix the problem. Anyone else had a problem like this? I live in the middle of no where and none of the mechanics in a 50 mile radius will touch my car. It's possible that the alternator I got actually isn't compatible, as I did do some budgeted shopping for one. Any ideas?

Pipe connected to throttle air intake

NickstaDB — Tue, 28 Apr 2026 12:04:00 GMT

My 2017 XFS lost all power on the motorway last night - the accelerator wasn't responding and I thought it was just lag for a moment but it didn't kick in and then felt like the car actively slowed when I pressed the accelerator down hard. I pulled over and switched the ignition off then when I switched it back on the accelerator worked again and was fine for the rest of the journey. The same happened again within the first 10 minutes of the return journey.

I've got a P2101-77 diagnostic code suggesting I likely need to either clean or replace the throttle body. I disconnected a pipe from the side of the air intake and it was very brittle and snapped off as I pulled the connector away.

Does anyone know what this is? It looks like I might just be able to replace the tubing but I'm not sure what with e.g. whether it needs to be a specific spec (heat resistant? able to cope with pressure of whatever goes down it etc?).