P141000 fault

[Tommy90]

Hello. I would like to ask for advice. The second time the engine light came on and the diagnostics threw error P141000 - "oxygen concentration, release phase, not reliable, low" it happened to me when there was little fuel in the tank, 2x. Please do you know what it could be? Model w204, 2008, 320CDI, 7G tronic. Thank you

 

[Tommy90]

Hello. I would like to ask for advice. The second time the engine light came on and the diagnostics threw error P141000 - "oxygen concentration, release phase, not reliable, low" it happened to me when there was little fuel in the tank, 2x. Please do you know what it could be? Model w204, 2008, 320CDI, 7G tronic. Thank you

 

[Craiglxviii]

C320CDi engine warning light

Hi all, new to this site and looking for a little help if possible. I'm a converted BMW owner so new to Mercedes, I have a C320 Cdi which I love very much, I changed the fuel and air filters yesterday as it was the only thing not done when the car was serviced by mercedes 2 months ago, it...

forums.mercedesclub.org.uk

This thread may help

 

[Tommy90]

I changed the air filters. I cleaned the mass airflow sensor. problem still continues. I already have a higher fuel consumption. 15l/100km. What should I do? do I have to buy a new mass airflow sensor? will that be it for sure? Please help.

 

[Larkone]

You need to get it on STAR and get it properly diagnosed - throwing bits at it is a bit like playing darts with a blindfold, you might be lucky

 

[Tommy90]

Ok. What is STAR please? Thank you

 

[Larkone]

MB's diagnostic tool - used by MB garages and independents, allows the deepest possible dive into what is actually going on to allow for proper diagnosis and avoids throwing parts at the problem. Put your location up (or in your profile) and someone should be able to point you to an indy in your area (much cheaper than MB stealerships)

 

[alexanderfoti]

+1, that code and definition sounds wrong.

Xentry is used on W204's, W205's etc, STAR is used on older vehicles, up to around 2007

 

[Tommy90]

My car is w204, 2008. I am from Slovakia, city Nitra

 

[mattkh]

My car is w204, 2008. I am from Slovakia, city Nitra

Mileage..???

 

[Tommy90]

Is this important? 21x xxx km

 

[mattkh]

Is this important? 21x xxx km

Thank you.
At that mileage on a diesel engine you get a lot of carbon build up.
Also, the injector tips may need cleaning.

 

[Tommy90]

Thank you.
At that mileage on a diesel engine you get a lot of carbon build up.
Also, the injector tips may need cleaning.

alright. car loses power at full throttle it goes approximately 80 km and is lazy. could it be the mentioned maf?

 

[mattkh]

alright. car loses power at full throttle it goes approximately 80 km and is lazy. could it be the mentioned maf?

I would change the air filter first and then test.

 

[Tommy90]

air filters changed. Same problem...
my fuel consumption is 16l/100km. Crazy...

 

[Tommy90]

Intercooler hose was cracked…. Problem solved…