That is still pointing to the FPR that I discussed in my linked thread. You can keep messing around or change the sensor and see if that fixes the problem.

If you want to do more trouble shooting hook up a fuel pressure tester and see what you are getting. That code is saying your fuel pressure is too high. You can verify that.
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Full details are in the S-Type codes PDF and in JTIS. +1 on just change it unless you want to hunt around wiring etc - but see the codes data which spells out every known cause for each code.

 

You are talking about a regulator in your thread and with a different code. Is a regulator the same as the sensor that I posted the link to in this thread?

Guys understand that not everyone has your level of knowledge! Sometimes just plain old English helps a lot.

I don't know if there is a difference between the regulator and the sensor that I purchased.

Once again here is the part I purchased. Is this the part you are talking about?

03 2003 Jaguar S Type Air Fuel Ratio Sensor - Fuel Injection - Denso, Front, Upstream - PartsGeek

 

The fuel pressure regulator is not an air fuel sensor (Also called the O2 sensor).

I posted the factory diagram of where the sensor is located along with Ford and Jaguar part numbers. There is not much else left??

Again either change the sensor or hook up a fuel pressure tester to verify what your fuel pressure is. I also showed where to hook up the fuel pressure tester in that thread.

Look at the pictures the O2 sensor looks nothing like the fuel pressure sensor.
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Ok this is why I am confused you are using the term regulator in this thread and then sensor. In the directed thread you say "Thinking about replacing the Fuel Rail Pressure Sensor. I found it is part number AJ87977. Yet the first sentence of your response here is a regulator. Even with my limited knowledge I know a sensor and a regulator are two different things.

I'm not splitting hairs here I just want to make sure I order the correct part. As you can see I already ordered one incorrect part.

 

Your one posted earlier refers to Air Fuel. No Air should be involved so it could never be the right item

Thing is, all along you needed the vital data which was what actual code and from that its full Jaguar meaning and causes.

 

DAMNIT DAMNIT DAMINT!!! Sorry guys the P0193 code is,

Fuel Rail Pressure Sensor A Circuit High Pressure.

I left out rail. Its the same code the dealer read.

Hey I'm on my 28th straight day working, 52 years old in college and stressed about the Jag.

 

That's painful

 

I understand what your saying but Jaguar uses several terms for it so it's not real clear what they want us to call it. That's why I posted the diagram to show where the thing is.

Pictures we can all agree on!
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I posted the info in post #23.I have sent you a PM.There is only one device in your fuel system,part no AJ87977;it measures fuel rail pressure and is used to control the fuel rail pressure.


P0193 code is generated when the sensor(AJ87977) reports a high voltage(high fuel pressure)--there are a number of possibilities----failed sensor,failed PCM or wiring harness/connector problems.
The information on P0193 is in the JTIS,DTC section page 25.

The testing procedure is given in the JTIS,Powertrain section,303-04B,Fuel Charging and Controls,Diagnosis and Testing,B.

PS Don't get stressed out--Ive been retired for 6570 days straight,am approaching 70 years old and fixed 3 Jaguars this week

 

Could be worse. I had to replace the waterpump in the buick. GM is so retarded when it comes to engineering design.

 

How about taking a vacation to Northern California and fixing this for me! lol

 

Sure--when I get back from our Mediterranean cruise!

 

This is so troubling, when the check engine light is off the codes are gone. You can only read the code when the check engine light is on.

Now she is doing something else. This is an intermittent problem and it does it when the check engine light is off or on. I'll post a thread on it since I can't seem to find anything in the search.

 

That's false. The codes are kept for 40 warm-up cycles unless erased. If yours are gone but you did nothing to erase them then that points to a different fault - something wrong with the power to the PCM almost certainly.

 

Something is not right? The whole point of the check engine light is that when the light is on you have a problem. When the light is off the problem at that time is not happening.

But regardless the system memory records the errors so it should have a stored code. Now it is true that if the problem goes away after so many start and stop cycles the codes will be deleted so you don't have every single code stored in the PCM.

This usually takes 40 cycles to happen. A cycle is a cold engine start until the engine is warm and then shut off. So you can see it would take a while to clear the codes from regular driving.

Oops! Sorry this was already posted above!
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Front upper arm bolts come to mind! Strut bolt...had to use a tanker, as in m1 Abrahams tank, bar to losen the bolt not to mention the idiotic star type bolts! The design approval must have been scheduled during hookah day!

 

I carry my scanner with me now and when I hooked it up and the check engine light was off it literally had no codes.

This car is driving me crazy!!!!!!!!!!!!

 

Broken scanner - you ALWAYS should have P1000 or P1111 - or the only PCM with that fault we've ever met on this or the UK forum i.e. needs fixing. Don't ignore tese 2 alternatives as something is very wrong. 99.99% your scanner (or software).

 

The scanner shows P1111 but thats not a trouble code.

When I say it is not showing codes I am talking about trouble codes specifically the P0193 and P1000.

When the check engine light is on it reads those two codes. When the check engine light is off the only code showing is P1111.

I have cleared the codes only once and have hooked the scanner up multiple times since then.

Just like today, the check engine light was on, then off. Yesterday it was on all day.