problem error 4293 bmw x3

[duca]

good day guys, I would like to list a problem of this machine on behalf of a friend practically the car when it has the outside temperature is below 7? degrees the car starts and then turns off and does this continuously bringing in diagnosing the error 4293 and 4222 of the spark plugs, clear the ecu, glow plugs replaced and also the spark plugs in a bmw then they also did the alignment ews but nothing now they say that it only takes the engine control unit, the defect depends on you, I repeat, if the temperature ? the top 10?degrees the car starts and goes well the only thing the error in diagnosis, and only the spark 4222

[costa68]

Hello 4293, error of colour' internal control.
Checking the condition of the injectors, the return and flow.
Maybe, keep in monitored parameters, especially when the defect and see if you have one or more injector that is leaking.

[duca]

then ? a problem with the injectors, and the car has 220000km then the error of the glow plugs not ? veritevole I could understand why? the problem is the injectors or the return thanks

[costa68]

Hello I've a problem with the 4293, my problem was an injector that was leaking in the event you have indicated.
Attention! I'm not saying that the problem is the injectors, but only make a check before replacing parts unnecessarily.
Regarding the spark plugs, I recommend you to do a check with your multimeter in ohms.
I hope that help

[duca]

I understand costa thank you so far? check the injectors even why? the f? only a cold

[silven]

It is very likely the injector that does not hold in the "return" smontali, and have them check you'll see that you find one that loses... gi? happened to me...? also check that when you defect in the priming feed pump functions..me ? a case successfully with the same problem and it was the rel?...

[duca]

I wanted to update to the help given then I did redo the injectors to the friend even why? the km cerano the problem and less pronounced say that it takes less points to stay in motion, error, and always 4293 and 4222 now I wanted to check the pump in the tank, the filter, and if you give me a hand ? the rel? the pump then the returns have all been changed and controlled so they are not ustruiti

[costa68]

Hello duke, the tests that you want to do are right, also the control that you have specified the links silven is correct, but before changing parts, perhaps unnecessarily! you should do the audit, the correct check that you have specified the links silven you should have the confirmation and connect a pressure gauge in the low-pressure and keep monitored the power, then see if indeed the problem is the low pressure. Now I do not have the precise data of the car, but if I remember correctly, the relay of the pump you should find in the passenger compartment behind the glove compartment. For the fuel filter if you have the smallest doubt, change it! it is always welcome.
Of course, control of contamination diesel should do it.

[silven]

I'm at the point, you should also check with a diagnosis attached to it when it the problem on the parameters what happens... check if when you turn off there is no voltage to the injectors, why? in that case it's not ? a problem of diesel also checks that there is a problem with the bulb for the oil pressure, those cars if the ecu gets that not c'? oil pressure (for various reasons... whether mechanical or electronic) in addition to the priming feed pump.

[beppe.c]

I instead of starting from the injectors control the temperature of diesel fuel and temperature sensor diesel I would if everything is ok then procederei to the injectors would be attributed also the anomaly to the glow plugs and then as we all know the density of the diesel fuel changes depending on the temperature and, therefore, impact on the injection.