Getting this code every 300 miles…
Car seems to run fine
Does this mean front sensor (Only the front?)
What is the usual remedy- replacement?

How do we access this unit - does intake manifold have to come off?
If manifold must come off - are there any step by step instructions?
Our local Jag shop says sometimes the sensor code is tripped by noisy timing chain –

comments?

thanks,
Lou
San Diego CA
’97 xj6

 

If it is the fwd sensor should be able to get it by removing the smog pump in my opinion . Part # LHE1692AA and what is in my car look very different then the pic for the Nissan . If you want a fundamental resistance reading of the sensor you can pic it up at the red ECU connector as the 2 should read the same . It is a shielded wire and you can clean the shield ground along the upper firewall as there are 2 or 3 ground terminal post

Welsh Enterprises, Inc - Jaguar XJ6(95-97) / X300 Fuel/Emissions Emissions Parts - Knock Sensor - XJ6 95-97 XJS 92-96

 

Hi Lou,

I am attaching the Diagnostic Trouble Code Summaries manual for your car. Here are the definition and possible causes of P0332:



As you can see, P0332 refers to a problem with the circuit for the Knock Sensor (KS) for cylinders 4,5 and 6, which are the rearward three cylinders closest to the firewall.

Possible causes include one or both KSs loose in the block (unlikely), high resistance in the wiring between the KS and the Engine Control Module (ECM) (likely), or a failed KS (possible).

Your mechanic's suggestion that a noisy timing chain could cause this code might be more likely if you had a code related to the front KS instead of the rear one. The knock sensors are piezo transducers (a type of audio microphone) filtered to be most sensitive to sounds in the frequency range of detonation or preignition in the combustion chambers.

A very likely cause of P0332 is oil contamination of the electrical connector for the rear KS. Another possible cause is corrosion or water on the connector for the ECM, or corrosion on the ground points referenced by the ECM, especially the right hand bulkhead/firewall ground stud and the ground stud on the right hand A-pillar inside the right footwell (behind the side trim or kick panel). See pdf pages 49 and 50 of the Electrical Guide, which you can download here:

Jaguar X300 Electrical Guide 1997

Please keep us informed!

Cheers,

Don

 

Whoops, the cheap knock sensor is for a 2001 xj8 !

Any tips on getting to the rear sensor on the x300 ?

 

Might be able to get to it from the top by removing the the intake ducting before the throttle body and if not enough the throttle body also .

 

New ones are no longer available. Better luck getting one used; plenty on eBay, but I understand that knock sensors on X300 rarely fail.

 

Might just need a connector clean or replacement as it is a I believe a EV1 ( off the top of my head , but it's somewhere on my laptop ) commonly available from the local parts store . Same as the others on the X300 like the fuel injector connectors .

 

It uses a shielded wire. I would inspect that wire and make sure it has not lost its shielded properties. Perhaps the sensor and connector are fine and the wire is not.

 

Curious thing with this code, there seems to be a close relationship of the cooling system with this code. Our fellow listor Nathan concluded that his low coolant level tripped it.
I have put up with the PO332 code popping up constantly for years on my 97.
With plenty of time on my hands, I recently changed the lower radiator octopus hose and adjacent hoses(without pulling intake manifold) .
Result, no codes for several months till we worked on the lower shock bushing, hammering like crazy on the stuck bolt/bushing. Code came on, but I reset soon thereafter.
Now, no more shock sensor codes popping up.