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Fault codes help

5.3K views 4 replies 2 participants last post by  mojoer  
#1 · (Edited)
Hello fellow good taste in vehicle people!

I am having a few fault codes in my Jaguar XF S 3.0D V6 09 plate vehicle.

I've recently sold my 2013 Audi A5 and went for something a bit more comfortable and powerful.

The car has a few fault codes that I want to be able to look into and resolve myself.

Could anyone kindly point me in the right direction?

Down to the good bits:

Main fault which I believe has caused 'reduced performance':
  • Vehicle is displaying a reoccurring DPF fault: P2459
Number of successful regenerations: 82
Incomplete regeneration status: 1
Number of partial successful regenerations: 0
Having tried to force a regen using my iCarsoft device, the soot levels are sporadic. When loading the reading, they are at 3200g, this then reduces down after about an hour of driving to 1200, then 800, 500 and then around 2.2-2.5. I then try to initiate a regen (as it must be between 0 and 60) and it asks me to turn the ignition back on - after which the value is back to 200 and I cannot force the regen!

I've taken the vehicle into a Jag indy garage (Cov Cats) and they said they've checked the sensors and leaks with no issues found. Is the number of regenerations at 107k miles normal?

How can I force a regen?

Is average of 23mpg good for a mixture of motorway and town driving? I was hitting 40-55mpg in a 2.0 TDI with my driving style.

  • B1231 - Longitudinal acceleration threshold exceeded
  • U0415 - Invalid data received from ABS control unit
  • P1712 - Transmission torque reduction request signal malfunction
  • B1041 - Turn signal power feed has a blown fuse - where is this, how can I fix, it sounds simple?
  • C1A06 - Rear right height sensor - is this an easy DIY job?
  • C1D01 - Parking brake release switch - intermittent which causes a red fault on message centre. Cycling ignition allows me to apply the parking brake. Error consistently comes back.
  • C1D00 - Parking brake apply switch
  • P0488 - EGR throttle position control range/performance
  • B1261 - Solar radiation sensor - circuit short to ground - I think this is the sensor at the front of the dash - is it difficult to replace or even worth it?
  • Before I purchased the vehicle the battery was replaced. When starting the vehicle for 0.5 seconds a red battery light is shown which disappears as fast as it came on. There's no fault code, is this something to worry about?

Many thanks!
 
#2 ·
Hi

We have the same car on a 10 plate. This may or may not help you.

A few years ago the dpf got clogged up after the intercooler burst(a known fault on early models).
Having seen the cost of a new dpf I tried cleaning out the old one.
Basically seal the pipes on one end of the dpf so they are water tight. I stood the dpf on its end and filled it with a mix of bicarbonate of soda(can’t remember the strength) and left overnight. Give it a good rinse out then I filled it with cocoa cola (not cheap stuff or diet) after reading on another forum that the original is the best!
Left that in until the next morning, gave it a VERY good wash out with a jet washer the. left to drain on its end again overnight.

Put it back on and took it to my Jag indy garage to force a regen. He said it showed as having only 2% soot in it 😃
That was over 4 years ago and approx 35000 miles and it’s still going strong. We mainly do short journeys and average 29-34mpg, and I’m not light footed either 😉

Now I don’t know if it was a combination of the bicarbonate of soda and the coke or if one alone would have worked, but for a few pounds it’s worth a shot as long as it is only throwing an error due to being used for a long time doing mainly short journeys which can eventually fill the dpf.
On the other hand you could have another issue causing the engine to run incorrectly which is causing the excess soot.

BUT it could be worth a go cleaning the dpf out to see what happens for the cost of a few litres of coke?
 
#4 ·