3.0lt GU Patrol engine warning light

The first thing i would do is clean the airflow sensor it's the most common cause of the engine light coming on.

Earth strap issue is also a common cause for random error codes (i.e. engine warning light).
Sounds like yours wasn't a random code however....

Sav.

We had one at work that was doing this. First couple of times the local dealer drained the tanks & blamed contaminated fuel. Third time they replaced the Injector pump. Hate to know what it cost but it hasn't done it since.
When the warning light came it would suffer a dramatic loss of power. Stopping the engine for a few minutes would seem to solve the problem. When it was restarted it would run fine for another couple of hundred KMs.
Didn't sound like a dirty fuel problem to me, but the dealer always knows best.

Marty.

That is the list of fault codes.

In mine the most common one I have had was caused by a bad earth on the rocker cover on the left hand side as you look at the motor from the front.

The best thing to do is take it to a Nissan Dealer and get it diagnosed.

Before they let you spend money on a new computer if that's what they reckon it is clean the earth connections?

Fault codes
0102 Air Flow Sensor
0103 Coolant temp sender
0104 Vehicle speed sensor
0203 Throttle pedal switch
0208 Cooling Fan control
0301 Engine ECU
0402 Fuel temperature sensor
0403 Throttle pedal position sensor
0406* Intake air volume VNC system
0407 Crankshaft position sensor
0502* Battery voltage
0504 Auto Trans communication line
0701 Injection Pump –cam ring position sensor
0702 Injection Pump –TDC pulse sensor
0703 Injection Pump communication line
0704 Injection Pump –spill valve
0705 Injection Pump –ECU
0706 Injection Pump –spill valve
0707 Injection Pump injection timing control
0802 Engine ECU
0804* Engine ECU
0807 Stop lamp switch
0901 Engine ECU
0902 Engine ECU relay
0903* Engine ECU
0905 Intake air pressure sensor
1003 EGR volume control valve
1004 Injection Pump –fuel cut out system

does it only come on when on bumpy or corrugated roads?

does it only flicker on for brief moments?

is the vehicle still travelling OK when it comes on?

if so, mine does this, so let me know how you go?

BTW, I don't register an error code.

I do have a dtronic fitted.

Gio

have you noticed it after short trips only...say a small drive somewhere before the engine has the chance to warm up...then you start the engine shortly after again when still cold?

Hi,
I had mine come on with similar symptons, i.e. lack of power, light on.
I changed the fuel filter and it hasn't come on since (done about 15000km since)
Worth a try. Although if the dealer read an error code, may be different.
Note that the light will come on from the float switch inside the fuel filter if there is water in the fuel. However, if it comes on for that reason it will not set an error code.
Cheers

A previous reply to your query has given you the fault codes,these are also listed in the Gregory manual for you vehicle,it also details how you can check the fault codes yourself by bridging out the terminals 1-8 and counting the flashes of the engine light.
But as you have had the Nissan computer diagnose you should be on the right track.
I had a similar problem with the light coming on at random but it turned out to be the Air flow sensor.
Regards

I'd agree that the air flow sensor is certainly worth cleaning. It costs nothing to do & is a quick easy job. I don't really think that the standard air filter is the best set up for dusty roads. It may well be adequate, but a minor film of dust does get through, and is enough to coat the sensor. The sensor must be clean to work accurately.

That's about the only problem mine suffered in 200,000 kms (2001 model), although the warning light did flicker on and off occasionally over corregations.

Best of luck.

This is the fault for no 4 or no 1 piston about to blow up. I would drive it to Nissan and get a new engine fitted straight away. This will save on your towing costs when it ultimately dies.

Had this problem for a while last year .

Did the error code check a lot of times and the logged fault changed a few times and then seemed to set one of the couple of codes ( at random ) for injection pump replacement.

The thing that cured my vehicle was that it went on for so long that I had to do a service , when I changed the fuel filter my problems were solved. Change my filter at 10k now not 40 as in the manual.

If you get out of it with just an air leak you will be lucky , I was looking to book mine in for a pump change $$$$

Glenn

I had similar problems, wwhen I went uphill in high altitudes, the dealer replaced 1 airmass sensor( the ecu threw this error air mass. but it still continued , then my intercooler started leaking so the dealer changed it and the light never came on again not even when my engine blew 2004 nissan patrol 65K.
I guess it was the intercooler that was cracked and didnt notice it until the crack became bigger

Good to see we are developing such a good knowledge database for the 3.0L here, great stuff.

FWIW mine came on because the Fuel Filter Lift Pump had developed a pinhole in the diaphram pump and was sucking air. Went into limp mode, would reset briefly when turned off etc. Dealer replaced under warranty, said not common but not unknown.

I'd drain or change the filter before I did anything else.

Hi had the same fault on my 2000 model. It was the mass air flow sensor, which is what causes the tubo from what I can work out to not come on boost until about 2500 RPM (ie:not much power till 2500RPM )and then possibly the cause for the over boost problem that causes the pressure hoses to blow off. the extra boost is what I consider the cause for the intercooler on mine to have developed a leak ( If you have any oil anywhere on or around the intercooler It would be a reasonable assumption that it is leaking). It cost approx $300 from nissan to have them fit a new air flow sensor (if they plug in the computer that diagnoses all it can provide the opperator the output voltge levels from the air flow sensor and provide you with the answer as to wether it is working within is set tollerances) If you have a finer filter or any of the other types of oil impregnated filters,they cause the mass air flow meter to fail, throw them away and get the old trusty paper filter. An intercooler retails for $1200 (If you know someone inthe trade you should be able to get that figure down to around $800) Good luck mine is going better than I could ever have hoped for. To the next so called genious who owns a toyota and would like to tell me that what I have experienced is not correct thanks for the effort.

Hi Gio,
Got a 2000 model 3ltr, had the light come on recently, Read the owners manual and the first thing it tells you is check fuel filter. On the bottom of the filter is a drain bung (prick of a thing to get to) undo it a few turns and prime with the hand pump, most likley just moisture in the Fuel. No matter what you do you will always get moisture in diesel this is why almost all diesel filters have a water trap on them. Because diesel systems work on a return line to the tank the fuel that goes back to the tank is warm, therefore creates condensation in the tank hence the moisture in the filter.I deliver diesel for a living, have always had diesel 4wds and change the filters every 10000kms do not understand why manufacturers and dealers let them go longer, 30 & 40000klm intervals is just stupidity and asking for TROUBLE. Anyway draining the filter fixed my problem and added A dose of CHEMTECH diesel fuel conditioner as it is the only one that mentiones moisture dissapation. So check your filter, might be an easy fix.

cheers RosscoH

G'day guys (& gals) and thanks four all your resposes.
Heres what the problem was/is with mine.

The intercooler was found to be leaking. This was sent out to be repaired and cost me $230.00 inc labour. When the repaired intercooler was fitted to the vehicle it found the the air flow sensor was now no good and I was told a new one needed to be fitted around $214.00 for the sensor only.

This is as one of the previous replies says that the two go hand in hand and when the air flow sensor fails the boost is too high leading to blown hoses and cracked intercoolers,

I didn't have them fit the air flow sensor because I thought the cost was high and I know a couple of people that may be able to assist with a better price (i.e. trade).

When I do this I will also change the fuel filter and report back. Thanks again for all you assistance!

Gio.