XF (X260) 2015 onwards

Standby relays.

Thread Tools
 
Search this Thread
 
Old Jul 20, 2025 | 01:44 PM
  #1  
Tomek_krot's Avatar
Thread Starter
|
Junior Member
Joined: Jul 2025
Posts: 5
Likes: 0
From: Krotoszyn
Default Standby relays.

Hello everyone. Patient: x260 Sportbrake 2018r.
B1412-96 Standby relay box - internal component failure. In the trunk on the right side is the fuse and relay module JX63-14N030-AB. Which relays are responsible for this error? Should I replace all the ones I've marked in red? Regards
 
Reply
Old Jul 25, 2025 | 10:06 PM
  #2  
Lightweight's Avatar
Member
5 Year Member
Joined: Dec 2017
Posts: 41
Likes: 4
From: Salt Lake City
Default

Are there symptoms to the problem or was this found on a scan? I don't know this error but before firing the parts cannon at it I would start with the basics. What is your battery state, is there a bad ground to the module has the connector to the board corroded or come lose, any sign of water ingress? If there are systems that have failed start with the components for them first. Relays are generally very reliable. From what you have highlighted in red, they look to be on the system board not 'user replaceable' components.
From Land Rover forums there are a few posts on this error code so it may be looking there.

 
Reply
Old Jul 27, 2025 | 02:03 PM
  #3  
Tomek_krot's Avatar
Thread Starter
|
Junior Member
Joined: Jul 2025
Posts: 5
Likes: 0
From: Krotoszyn
Default

Originally Posted by Lightweight
Are there symptoms to the problem or was this found on a scan? I don't know this error but before firing the parts cannon at it I would start with the basics. What is your battery state, is there a bad ground to the module has the connector to the board corroded or come lose, any sign of water ingress? If there are systems that have failed start with the components for them first. Relays are generally very reliable. From what you have highlighted in red, they look to be on the system board not 'user replaceable' components.
From Land Rover forums there are a few posts on this error code so it may be looking there.


Hello. The battery is new, the connector is fine. There's no water, it's dry as a can. After scanning, this error appeared. I got error P0039, but I haven't fixed it yet. I'll check the ground. Thanks for the tip.
 
Reply
Old Jul 27, 2025 | 04:36 PM
  #4  
Lightweight's Avatar
Member
5 Year Member
Joined: Dec 2017
Posts: 41
Likes: 4
From: Salt Lake City
Default

Originally Posted by Tomek_krot
Hello. The battery is new, the connector is fine. There's no water, it's dry as a can. After scanning, this error appeared. I got error P0039, but I haven't fixed it yet. I'll check the ground. Thanks for the tip.
P0039 is apparently for the supercharger/turbo bypass valve
For the original B1412-96 Standby relay box - internal component failure message there is apparently a TSB that states this is a false positive if no other symptoms show: SSM72302 Jaguar Accessory Control System TSB
No idea if there is a fix, I have not found reference to it.

 
Reply
Old Jul 28, 2025 | 04:59 AM
  #5  
Tomek_krot's Avatar
Thread Starter
|
Junior Member
Joined: Jul 2025
Posts: 5
Likes: 0
From: Krotoszyn
Default

Thanks for your help. The only thing left is P0039. Which sensor is responsible for this error? Where can I find it? Best regards and best wishes.
 
Reply
Old Aug 2, 2025 | 10:13 PM
  #6  
Lightweight's Avatar
Member
5 Year Member
Joined: Dec 2017
Posts: 41
Likes: 4
From: Salt Lake City
Default

Have you been able to find the sensor? I'm assuming this is for the 3L V6 SC engine as I have no idea on the 2.0 Turbo or diesels. Based on my stripped down intake the relief valve sensor is the top large grey one in the middle front of the supercharger housing. Not the small black circular sensor, I think that is for air temp..
The grey 'goose necked' connector below is what I assume to be the sensor. This is a guess based on where it is though.

 
Reply
Old Aug 3, 2025 | 08:02 AM
  #7  
Tomek_krot's Avatar
Thread Starter
|
Junior Member
Joined: Jul 2025
Posts: 5
Likes: 0
From: Krotoszyn
Default

Hi. I found this: error P0039 was generated by the valve that engages the large turbocharger. I have a 2.0-liter 240 hp engine that I've been overhauling for the past four months because the crankshaft was damaged. The previous owner changed the oil every 35,000 kilometers. Your suggestion and the diagnostic program helped me find the problem. Thank you for your help.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
PBRStGang
XK / XKR ( X150 )
18
Sep 6, 2025 04:24 PM
car5car
XF (X260)
4
Apr 27, 2020 10:48 AM
Terrific
XJ XJ6 / XJ8 / XJR ( X350 & X358 )
1
Jul 21, 2018 01:56 PM
JensenHealey
XJ XJ6 / XJR6 ( X300 )
3
Feb 25, 2017 07:20 PM
TinyDancer91991
XJ XJ6 / XJR6 ( X300 )
11
Jul 31, 2013 04:46 AM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 



All times are GMT -5. The time now is 06:38 AM.