Hi all,
Just received my new code reader Autel MS509 plugged it up and started to read the codes and below is what I got. My Jaguar seems to be running ok however when I start it up first thing on a morning there is a slight vibration felt for around a minute until rpms goes down to about 800
P0004 Fuel Volume Regulator Control Circuit High
P0005 Fuel Shutoff Valve Control Circuit/Open
P0006 Fuel Shutoff Valve Control Circuit Low
And a P1647
Engine light is on and can be reset but will come straight back on
Any ideas on how I can start and get things fixed or have a got a poor cat...
Cheers,

 

Are you sure about P0004, P0005 and P0006? My Jaguar DTC list for the X-Type starts at P0010.

P1647 : Definition
ECM HO2 Sensor control malfunction - bank 2 upstream (2/1)

Possible Causes
HO2 Sensor 2/1 heater failure
HO2 Sensing circuit: short circuit to ground, short circuit to high voltage, open circuit
ECM failure

You should be able to safely ignore ECM failure as you wouldn't be running at all so it's looking like the Sensor or it's connector/wiring.

P1647 sets the MIL at the second cycle so this is probably why it keeps coming back on.

Graham

 

To quote
'The P0004 is an OBDII generic code, but almost none of the vehicle manufactures use it. If you are getting this code, make sure you are using the correct OBDII code scanner for your vehicle's make and model.'
and with Graham's comments I'd guess the 005 + 006 are also spurious since they're contradictory.
With heater failure AND open circuit I'd guess at the wiring to your bank2 sensor as The Man suggests.

 

Hi there,
Saturday afternoon engine cold... Just been playing around with the code reader again, have just plugged it back in and now I have a code P1642 Fuel Pump Monitor Circuit High Input
I don’t any of the P0004 P0005 P0006 and no P1647 now
I think or hope that the P0004 P0005 P0006 are just because my code reader is not happy with my Jaguar
Just one question would I get different readings when my engine is cold and hot? I will keep reading the codes for the next few days when my engine is cold and after a good run.
Cheers,
PS How would I fix a P1642 Fuel Pump Monitor Circuit High Input?

 

Have you checked your reader is on the 'approved' list
https://www.jaguarforums.com/forum/g...-%2A%2A-33347/
The codes shouldn't change like that.
Some will change after the engine's run, of course.

 

+1

The scanner is suspect when you cannot produce consistent results.

Where are you getting the code definitions from?

P1642 = CAN circuit malfunction

This is caused by a CAN short circuit or a control module failure. In the case of failure, additional DTC's are flagged to indicate which module.

Graham

 

Ok now the full story...
The codes I have are P1647 P1642 P1000
I should have read the instruction manual first...
My RPM’s move from 732 to 752to 760 is this normal or could it be due to the codes

 

You really need to check the code reader for compatibility - it could be a complete wild goose chase.

 

It has an Instruction Manual. This could start getting dangerous!

P1000 = OnBoard tests not completed since last memory clear. It will be replaced by P1111 when the tests have completed.
P1642 : see #6 above
P1647 : see #2 above

The slightly fluctuating rpm at tickover could be related to the P1647.

Graham

 

Hi there,

Thanks for the info my scanner is an Autel MaxiScan MS509.

As for the P1642 code I find this on the internet...

Fault Code:- P1642 Indicates a Power-train fault


The fault is generally due to a problem in the Computer & Output Circuit area


Fault Description: CAN circuit malfunction

Action of ECM:- ECM Default:– Speed control inhibited– Maximum engine speed reduced


After clearing the DTC, complete the Ignition ON 10 seconds
Check for a reoccurrence of fault DTC.

Possible Fault:- CAN short circuit fault Control module failure –check for additional flagged DTC(s) to locate control module source

Would this code put my car into limp home mode? and where would I start and try to fix the problem.

Regards,

 

It's best to give any of the code interpretation sites on the web a miss. I've seen too many claiming to give Jaguar descriptions that turn out to be generic.

Here's the X-Type DTC Summary document from Jaguar:

DTC Summaries - X Type 2002.pdf

However, I'm still not convinced your scantool is interfacing correctly with the vehicle from the initial set of DTC's reported.

As you can see from the 'default actions' column for P1642 in the PDF, this will put your vehicle into restricted performance mode.

Graham

 

Thanks and I will gave them miss... When you say restricted performance mode, how will I know!!! It still runs at 70 plus mph and to me it seems ok any signs I should be looking out for

Regards

 

Look at the Default Actions column against P1642.

If this is a genuine code, you should be finding throttle opening limited to 30% with a consequential reduction in maximum engine speed. Once you've experienced actual 'restricted performance', you'll not forget it.

If you can still travel at 70mph+, I doubt your scantool accuracy even more.

Graham

 

thanks

 

Since you're in the UK you can get one of these off EBay
U480 Car Auto Diagnostic Scanner tool OBD2 OBDII EOBDII CAN-BUS Code Reader UK
for about £15. No frills, no live readouts but it does reliably read Jaguar OBD codes - it's al I've got.
As Graham says the codes you are getting MUST be spurious.

 

Hi all,
Thanks for all the advice... I have re-read the codes today still got P1000 P1642 and P1647 I have no response from bank 2 upstream (2/1) so I will get that sensor changed.
I can read live data from my Jaguar and when I got to the TP section the reading when to 68.3% with the pedal pressed about two thirds down.
My Jaguar is very responsive, if the car is in restricted performance mode and only producing 30% and the P1642 code is correct, if I can find the cause watch out Ferrari...
The original P0004 P0005 P0006 have gone never to return.
I Will keep you informed of any progress and the only reason I got a Autel MaxiScan MS509 is that someone who has a Jaguar recommender to me.
Cheers,
As for the U480 that’s the one I bought but it did not ID the codes only the P1000 so I sold it and got the MS509 instead

 

Good that the codes are now consistent.

It could take a while for the P1000 to become P1111. It's not critical as our UK MoT doesn't include checking OnBoard tests have been completed - yet!

It will set P1111 with normal driving or you can force it by deliberately completing 'Drive Cycles':

Drive Cycle.pdf

Please post the results of the sensor change to help others who may be troubleshooting the same issue in future.

Graham

 

Hi There,
Yep sure will, I will try and get the sensor change ASAP and posted my results also I will rescan to see if any more codes appear.
Cheers,

 

Hi there,
I am a bit confused I have still have a P1647 code and trying to fix it. I called into garage on my way home and the mechanic said my 2.1 V6 2003 Jaguar has four 02 sensors two upstream and two downstream...
If I have a P1647 code which one do I replace? I thought it was the upstream one grey plug... How many 02 sensors does my Jaguar have? When I plug up my reader I see four options I can choose from some say sensor 1 bank 1 some say sensor 2 bank 2 ect...
Any help would be appreciative.

 

Maybe this will help