P1140 Error

[Phifross]

Dear all,


I have seen many post on the error P1140.
Myself I have removed and clean both of the solenoïd today, no dirt there, the filters were clean I didn't see anything wrong.
I put them back but the error came back after 10 minutes.
Also I guess there is no need to change them, Am I correct ?

What are the steps in order to remove that error please ?
Some are changing different sensor... but I'm not billionair I just would like to replace what has to be replaced...
The engine is going very smoothly, nothing wrong there, no hicup or anything like that.

I'm also living in west Africa and it is difficult to get the parts.

Thank you so much for your precious help !!!!!

[VStar650CL]

Unless there are hydraulic issues with your cam phasers, P1140 with no other codes is almost always a faulty sensor and not a faulty solenoid. Try a new sensor.

[Phifross]

Ok but which one ?

[Phifross]

By the way I'm also looking for the bolt fixing the solenoid, do you know the reference of these bolts ? They are 35mm long with partial thread....

[VStar650CL]

P1140 is for the passenger side bank (bank1). The driver's bank would throw P1145. Nissan stopped putting the VQ35 into Pathies here in the 'States in '03, but if you look here for an '01/'02 it should get you to the right part number for your screw:
https://www.nissanpartsdeal.com

[Hawairish]

P1140 is for the passenger side bank (bank1). The driver's bank would throw P1145. Nissan stopped putting the VQ35 into Pathies here in the 'States in '03, but if you look here for an '01/'02 it should get you to the right part number for your screw:
https://www.nissanpartsdeal.com

Tiny correction that 2004 did have the VQ35 still. But what's a P1140/P1145 in a 2004 R50 when those intake valve control timing positions sensors were omitted on drive-by-wire models (03-04)? Guessing African R50s were still drive-by-cable up to 04?

[VStar650CL]

Tiny correction that 2004 did have the VQ35 still. But what's a P1140/P1145 in a 2004 R50 when those intake valve control timing positions sensors were omitted on drive-by-wire models (03-04)? Guessing African R50s were still drive-by-cable up to 04?

Yah, I'm assuming his overseas model must be different. The FSM's from '03 up don't reference P1140/P1145 for USDM Pathies.

[Phifross]

I'm living in Africa but the Pathfinder comes from Europe, I imported it.
The engine is a VQ35DE
Also what to do please?

Thanks so much!!!

[Phifross]

Hello,

Woild it be possible for someone to help me to find which sensor has to be replaced for this error P1140 please?
Thanks so much in advance.

[mdmellott]

Checking a Japanese website, I see for R50 models made after 02/2003, the cam sensor needed for your 2004 is Nissan part number 23731-2Y524. That M6 bolt, 35mm long, Nissan part number is 081A0-6351A.

There are aftermarket alternatives for the cam sensor available in the UK at https://www.autodoc.co.uk/spares-search ... 3731-2Y524 , OEM replacements in Japan at https://www.amayama.com/en/part/nissan/237312y524 , and other locations as well as E-bay. As for the bolt, any standard M6 x 1mm x 35mm, hex head flange bolt will work perfectly. A hex head cap screw or regular hex hex head bolt, with a washer, will work just as well.

[Phifross]

Thank you so much mdmellott,

Also there is only one sensor to change?
This P1140 can't come from any other sensor?

Thanks

[mdmellott]

Thank you so much mdmellott,

Also there is only one sensor to change?
This P1140 can't come from any other sensor?

Thanks

The P1140 DTC is a Bank 1 (passenger side) fault code. Although there are 2 of these sensors on your engine, the trouble code points to the one at the front, top, right side of the engine. In the following link, there is a diagram showing where it is. Looking at the front of the engine in this diagram, it is the one on the left in the picture. https://www.nissanpartsdeal.com/parts/n ... &filter=()

As Vstar650CL said,

Unless there are hydraulic issues with your cam phasers, P1140 with no other codes is almost always a faulty sensor and not a faulty solenoid. Try a new sensor.

[Phifross]

Thanks so much !!!
I really appreciate all the informations.

The sensor has been ordered and the screws too but on Amazon, 13USd fir a screw is too much for me !!!!

One last question, when this sensor is not working properly is it affecting the engine ? In what way ?

Thanks so much in advance for your explanations.

[mdmellott]

One last question, when this sensor is not working properly is it affecting the engine ? In what way ?

The cam position sensors affect the ignition spark timing. If that bank 1 sensor is not accurate, your ignition spark at cylinders 1, 3, and 5 can be firing too soon or too late.

[rgk]

I would advise replacing the solenoid before the sensor. However, I see you've already ordered the sensor. If the code persists, you have to order the genuine Nissan solenoid. An aftermarket part won't work. I know from experience.

[Phifross]

Dear All,


I'm coming back with this error.
I have finally received the sensor, I cahnged it and still same error P1140.
The engine running fine, no misfire, everything is smooth but still that error with the engine ECS light on.

To be very accurate I have ordered this part
Walker Products 235-1151 Engine Crankshaft Position Sensor

Do you think it was an error from my side to order this instead if this ?
Nissan 23731-2Y524 CAMSHAFT Position Sensor

Please let me know.....
I feel that the original part is really expensive... that's the reason I tried the other one....

Thanks a lot for your reply !!!!

[Phifross]

Dear All,

I have some more questions concerning Camshaft and Crankshaft sensors.

The Crankshaft sensor is close to the oil pan it is correct ?
There is only one crankshaft ?

The Camshaft we have two of them right ?
They are in front of the engine, one on the passager side and the other on the driver side, correct ?
Both of them are close to the VVT solenoid valve?
We can interchange the right side one with the left side one, both of them are identical isn't it ?
There is no right side sensor and left side sensor isn't it ?

Now these three sensors are working the same way ?
I'm saying so because I think I have made a mistake and put the Crankshaft sensor instead of the Camshaft sensor....
I have not noticed any smoke, or misfiring or any noise from the engine.... But I would like to so things correct....
I know ther is a slight difference on the shape if the sensor.... but.... anyway I know I can be stupid sometimes...

Please answer my questions !!!!

Thank you so much in advance.

[rgk]

There is a crank sensor at the flywheel, behind a guard in front of and on the underside of the transmission.

There is another crank sensor besides the crank pulley. These are not interchangeable.

There are two cam sensors at the top of the front timing cover that are interchangeable.

There is one more cam sensor that is in the middle of the front timing cover.

[VStar650CL]

The crank sensor on your VQ35 is a diagnostic sensor, it doesn't affect the way the engine runs. There are actually three cam sensors on it, a main "phase" sensor and two "IVT control" sensors, one for each bank. Your code is for the IVT control sensor on bank1 (passenger side). See EC-22 here for the general engine layout, EC-528 for the location of the bank1 sensor:
https://www.nicoclub.com/service-manual ... 2%2Fec.pdf

The diagram here might also help you out, it's a little clearer than the FSM:
https://www.nissanpartsdeal.com/parts-l ... pnc=23731M

The IVT sensors are identical side-to-side, so if you got the wrong bank it's no big deal, just swap to the correct bank. Only the phase sensor is a different part number.