Evaporative Emission System Leak Detection Pump Sense Circuit High.

Apparently not common, not one thread comes up when searching this. Maybe something simple like loose gas cap hopefully? Anyone have experience with this?

 

If it's a circuit fault as you posted then it's already stated that it's nothing to do with the gas cap.

 

I found a thread on the XF forum. Might be the pump itself.

 

Does anyone have a link to the EVAP system diagram? Trying to find out where this sensor is located as well as the pump system. Surprised there is no info on this code from anyone else.

 

Depends on car info you've left out but is in JTIS (free download, cheap on ebay).

 

The S-Type Workshop Manual doesn't list a P2406, but it does list a P240600 with the same definition you describe, so it's probably the same code. Beginning on page 1802, the manual provides Pinpoint Test D you can follow to diagnose the problem.

If you don't have the Workshop Manual pdf, check the download areas here and at jagrepair.com. If you can't find it, drop me a PM with your email address and I'll send it to you.

For X350 owners who may have the same code, Pinpoint Test G532445p4 begins on page 2163 of the the Powertrain section of the Workshop Manual.

Cheers,

Don

 

Codes such as P240600 would sometimes (perhaps normally) be shown as P2406-00. The 00 is a subcode, where 00 means there isn't any extra data.

The subcodes were a later OBD II addition.

 

You have a rare code, if you get it fixed post back so we can see what the solution was.
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You refer to download areas for manual on this site. Can you point me to this area pls. I have code P2406 and can't find much info anywhere.

 

It's called the JTIS. Just look at the top of the forum for JTIS.
If problems you can get the PDF version on EBay.
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Post #1

 

P2406 CodeEvaporative Emission System Leak Detection Pump Sense Circuit High

I just fixed my 2008 S-type 4.2 which has been showing this code intermittently over the last 3 years I have had the car. When I bought the car it came with a new charcoal canister still in the box from Jaguar and it turns out that when you want a Leak Detection Pump you have to purchase it in a kit with the canister. When I got the car I just thought would put the canister in someday in someday, turns out you can only do that by dropping the whole rear end. I did eventually drop the rear end to refurbish it as this is a Canadian car driven year round. At the time I just unplugged the ELDP (Emission Leak Detection Pump) and sprayed some contact cleaner in it and plugged it in. I still ended up with an intermittent P2406 code which I just reset with the ELM327, it never affected anything. Well now it is emission check time for new plates and I took the car in with no Engine Check Light (ECL).I failed for the P2406 code. I ordered a replacement Bosch ELDP for $206.00 Canadian, a lot cheaper than the $700.00 kit from Jaguar with a charcoal canister I didn’t need. It is possible to get the pump in without dropping the rear end but very difficult with the hoses to hook up. I got the new one in and then found I could not get the electrical connection on. Further investigation showed that the connector plug had one of the connector tabs which are pin size with a broken terminal inside of it. A look at the old ELDP revealed one of the terminal pins bent out of position. It seems that before I got the car this pump has been replaced before and someone had managed to bend the pin. Probably why I got a box with a new canister in it. There is no room in around the output shaft to repair the pin so I ended up cutting a hole in the floor of the trunk and bring the terminal up there to repair it. I did get the broken pin out of the terminal and get it hooked back up. After a week’s driving I do not have a P2406 warning, I have a Check Gas Cap warning light so it seems the pump is repaired and now I have to chase down the dreaded Evaporative Emission System Leak.

 

What a good job on that tough repair!
I liked cutting a hole in the floor but that would take guts!
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