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2006 V35 Knock Sensor Fault Code Problem

nobby

By nobby,
in V Series (V35, V36, V37 & Infiniti)

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nobby Collaborator

nobby

Posted
Posted

Ok the LCD popup screen has a message "pitstop" .

obd check came up with

bank 1, knock sensor.

It only has 1 knock sensor so it cant be the knock sensor, given bank 1 only problem!.

O2 sensors,, I swapped em sides, fault stayed on bank 1, so they should be ok.

The A/F sensors look hard to get at, and possibly need a special spanner?.

Anyone ever removed these A/F sensors, How hard ??

Coil packs, manual test procedure looks to be very hit and miss???.

And injectors need the plenum removed , last resort job there!!.

Anyone have any input, ideas to solve this issue ?

Note.

O2 = middle of cat converter sensor

A/F = above cat converter.

PN-Mad Grand Master

PN-Mad

Posted
Posted

Pitstop doesn't mean anything.

It's just a resettable oil / filter / wheel kilometre counter. Doesn't mean there is an engine code.

Knock sensor I wouldn't worry about it the car is driving fine. Check the wires to it are intact, have been cases of mice eating the wiring in there.

Reset the fault code, and see if any check engine lights come on.

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nobby Collaborator

nobby

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Posted (edited)

The pitstop message has been cleared 4 times now & won't go away.

Seems to be more than a maintenance related problem, thanks for the input.

simply putting it out there to see if anyone else had struck a similar issue, & or had some pointers for possible cause and or tell tale signs to look at.

More input the better!.

The ecu is leaning the engine off as a result of knock detected.

Edited by nobby
sonicii Veteran

sonicii

Posted
Posted

The ecu is leaning the engine off as a result of knock detected.

ECU won't lean the mix if knock is detected.. it retards timing and richens the fuel mix, resulting in poor performance and poor economy.

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nobby Collaborator

nobby

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Thanks for that, I have been away for a while since the obd unit was connected.

So I can't remember the data , the $3k OBD device my mate owns, he told me it was leaning off.

sonicii, on 15 Feb 2016 - 10:50 AM, said:

ECU won't lean the mix if knock is detected.. it retards timing and richens the fuel mix, resulting in poor performance and poor economy.

nobby Collaborator

nobby

Posted
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Perhaps the engine is knocking because there is low fuel pressure, due to a blocked fuel filter? If it detects crazy knock it may throw a code...

I haven't looked at this yet, will soon. thanks.

PN-Mad Grand Master

PN-Mad

Posted
Posted

Well, that's the reason your pitstop message isn't going away. It has nothing to do with the obd port/reader/whatever.

You need to go through the menus and reset the service reminders. I take it you don't have the English conversion??

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Lakes101 Experienced

Lakes101

Posted
Posted

Well, that's the reason your pitstop message isn't going away. It has nothing to do with the obd port/reader/whatever.

You need to go through the menus and reset the service reminders. I take it you don't have the English conversion??

spot on!!!
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nobby Collaborator

nobby

Posted
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Well, that's the reason your pitstop message isn't going away. It has nothing to do with the obd port/reader/whatever.

You need to go through the menus and reset the service reminders. I take it you don't have the English conversion??

Ok thanks for that, No I don't have english conversion for lcd screen.

Are you able to walk us through the steps any way??

nobby Collaborator

nobby

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Soon as I finish typing I going to reset mil manually and see what happens.

Mil is throwing 2 codes.

knock and throttle control relay.

The autel unit only picked up on knock code, but the relay code may be new as it recently had a flat battery, and low power may of caused it, fingers crossed,

And have a look at jap menu see " If" I can work it out anyway lol.

Thanks for the help gents.

scotty nm35 Grand Master

scotty nm35

Posted
Posted

There is no throttle control relay. I suspect the Autel is having issues reading Japanese. :P

Sounds like it would be easier to find a mechanic that knows these engines, shame you are too far away for me to help, but I suspect the front wideband O2 sensor is buggered or an injector is blocked.

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nobby Collaborator

nobby

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Posted (edited)

There is no throttle control relay. I suspect the Autel is having issues reading Japanese. :P

Sounds like it would be easier to find a mechanic that knows these engines, shame you are too far away for me to help, but I suspect the front wideband O2 sensor is buggered or an injector is blocked.

Thanks scott, take it the "front" wide band is the top a/f sensor?.

Blocked injector was my first thought but pita to get at, hence putting it out there for another opinion.

Humm no relay, wiring diagram is showing one in section PG page25, but not identical box layout to whats in my car.

wiring dia show 15amp fuse and relay then throttle motor. so this is why I was looking at this.

but to be honest it didn't make much sense about a faulty relay the car drives and not bad at that, and fair mileage about 10/100k.

would of thought if a power relay for throttle was faulty it plain wouldn't of started & or run very badly etc.

Edited by nobby
nobby Collaborator

nobby

Posted
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Ok pit stop has been cleared.

noticed when pitstop message appears -- then I pressed enter nav button, it was cycling between 2 messages top left of screen.

then I noticed in information page a similar messages.

press nav enter again.

a page appears with 4 slide scales on it.

the slides when you press nav enter again can be reset to zero by nav toggle left and enter.

then Itoggled down to next slide scale and continue to reset again.

I reset all 4 scales to zero.

started engine and pit message gone.

Now I am laughing.

But it wouldn't of happened without the input from others, Thankyou

Edited by nobby
nobby Collaborator

nobby

Posted
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F####### now it's gone into limp mode.

And I can't seem to access mil by tapping the go pedal,( in a bit of a bind 1 may say).

guessing go pedal sensor is at fault this time.

lucky! I was about 1k from home when it happened, 1kph max for the trip back.

max revs were about 1200, and then couldn't get up the drive way.

ahhhhhhh

Edited by nobby
scotty nm35 Grand Master

scotty nm35

Posted
Posted

You can usually get a little more acceleration if you push the pedal to the floor, but only a little. Turning the ignition off and on can reset the fault, I had to do that while driving down the freeway a few times when using dodgy pedals sensors.

Been in limp mode too many times to remember. :P

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