Hi everyone can anybody please let me know how to replace my secondary air pump and where it is located on my 2005 jaguar X350 V6 I had my EML come on 3 days ago car still drives great no symptoms what so ever so please can anybody give me any information regarding this code will help as the code is saying air pump stuck on regards Graham

 

Graham,

I've moved your question from UK & Eire Region forum to X350 forum.

You have a better chance of Views and Replies posting TECHNICAL questions in the MODEL forum. The REGION forum is intended for questions about recommended specialists, meetings and other geographically relevant topics.

Graham

 

The secondary air injection pump is in the right front bumper. To access, you need to remove the undertray that covers the bumper. I believe the relay for the AIR pump is located next to the pump motor.

P244400 - Secondary air injection system pump stuck ON. Possibly causes: Secondary air injection pump control circuit: short circuit to ground.

You should easily be able to hear if the AIR pump running continuously. It will normally run for 30 seconds or so on a cold start then shut off.

 

Hi many thanks is it near side or off side where the pump is situated and is it easy to replace regards Graham Sears

 

It's on the right side of the car. If you're in the UK, then it will be on the driver's side. Once you remove the bumper undertray it will be very obvious--one side has the air suspension pump and the other has the AIR injector. It looks like a vacuum cleaner motor:

 

Hi many thanks everything is fine on car drives faultless don't you normally get any type of symptoms of this all I have is a EML light on and a code P2444 just don't want to put it in a garage for it to become a money pit regards Graham

 

You would probably not notice any drivability symptoms with the secondary air injection system malfunctioning. However, if it were my car I would not ignore this code. The AIR pump is not designed to run continuously, and if your pump is stuck on it won't take long before it has burned out. I presume that you can't pass an annual vehicle inspection with a Check Engine light on. Right now the issue may be a simple stuck relay, but let it go unrepaired and you could be looking at replacing the whole pump.

It's your call if you want to leave it unrepaired. I couldn't say whether this will become a money pit or not. Jaguar has never been synonymous with economical repair costs.

 

Hi I take on board what you are saying could you please advise what is the relay I would have to change and is next to the pump does it have a code or number the relay regards Graham

 

Hi just got car back from garage £200 later every thing is fine they checked pump , relay etc turned off EML light came back on took it back to garage everything fine I have been driving jaguars for the last 40 years but this has got me stumped as car drives fine I have been using my garage for the last 10 years always been happy garage said everything is fine but why did my EML come back on

 

Some punctuation would help! I can't figure out what you mean

 

I do not have the circuit diagram for your car, so the following guess may be way off base.
My assumption is that the relay has +ve applied when the ignition is on and the ECU then controls the ground/earth circuit. If it checks for voltage before grounding the circuit, and there is no voltage, due to a short between relay and ECU, it will think the pump is stuck on.
Check the relay ground wire to ECU - Ohmmeter on ground at engine or other known ground and other probe on relay -ve wire to ECU. The resistance should be almost infinite.

 

Hi to all car sorted know was a faulty relay, that made my EML come on, 2 garages later just to tell me it was a relay, now jag ok going to give it a oil change at the weekend also change air filter and pollen filter does anyone know if there is one or 2 pollen filter s

 

Just one cabin air filter, in both of mine.