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Greg, Technician
Category: Jaguar
Satisfied Customers: 6997
Experience:  Automotive diagnostic tech
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fault p1586,

Customer Question

Jaguar s type 3.0 v6 got fault p1586, cleared code but problem still exists, will not start.

Submitted: 3 years ago.
Category: Jaguar
Expert:  Greg replied 3 years ago.
Hi .

This code relates the the throttle body as the throttle body control module is not communicating with the ECM.

Check the under hood fuse and relay box for bad fuses and check the PCM relays 1 and 2 replace any bad fuses and relays .

Did the same code come back after clearing the codes .

Rgds Greg
Customer: replied 3 years ago.

Hi Greg.

I have checked under hood and there are several small relays that are mutilated, I don't know about the big ones. according to my print out relays 1 and 2 are for wipers, power train is 3, is this correct. the code is cleared until re read and then it is back again. will go now and check all fuses. I have no way of checking relays.

Expert:  Greg replied 3 years ago.
Hi Stan.

Replace the mutilated relays ,

How did they get mutilated.

Customer: replied 3 years ago.

iHi Greg.

Will exchange relays asap, on order. difficult to get where I live.

Only had car since December, not realy needed to go into fuse box, don't know how got damaged, one is badly cracked and one has a hole in it.

Thanks for your assistance so far.

Expert:  Greg replied 3 years ago.
Hi Stan.

looks like this is your problem. .
Replace these and you should be able to start your engine unles you have other issue .

Disconnect the battery until you have the new relays , ones replaced connect battery and try and start .

"Battery's" Make sure this is fully charged, as a weak battery may turn the engine over but if jags don't have a good strong healthy battery are a pig to start.

Rgds Greg
Customer: replied 2 years ago.

Hi Greg, Sorry for delay just received relays and re placed them, still nothing. tried clearing fault that returns when ignition is switched off. code clears but fault remains and engine will not run. it ran for perhaps 30 seconds yesterday but appears to be only one bank running and will not rev.



Expert:  Greg replied 2 years ago.
Hi Stan .

I'm going to opt out and put you on to another expert that i think might be able to help you with this issue .

Regds Greg
Customer: replied 2 years ago.

Customer: replied 2 years ago.

Thanks Greg

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