P1419

[mfinghis]

Hi guys,

The "check engine soon" light went on on my 2005 X5 (53k miles). After reading I got the P1419 code - secondary air system - air mass flow sensor disconected or stuck signal-
Does anyone have the same problem ? -waht it is, what needs to be replaced , how much etc etc...
Any info would be much appreciated.

Thank you!

[ArmyX5]

I had this problem a couple of times and the first time was the secondary air sensor, the red circle on the left. About a month ago the same code came back and I was told by Weasel to take the valve off and clean it. I did and it worked. Didn't have to spend a cent. Only take it off, red circle on the right, and clean it. It should be a 20 minutes job. I hope this help.

[mfinghis]

Thanks ArmyX5! When I''ll get some time I will try what you suggested.

Thanks again!

[ATLViking]

Old thread, but I'll post up my solution for a future lurker (like I was).

I had the same code - and there is a second mass air flow sensor as indicated in the prior post. I tried to clean mine as well - no resolution.

I then removed the valve to make sure that it wasn't stuck. It wasn't so that removed that as being possible.

I then removed the hose that attaches to the air pump to the valve and started the car (it has to be cold). The pump ran for about 30-45 seconds and sounded like a vacuum cleaner as it should.

Final possibility was the mass air flow sensor as well. With the car running I backprobed the wiring harness with a DVM. The ground was good, the 12V supply was good, but the third wire (which was the signal wire) was reading 0V - meaning it was not returning a signal to the computer and triggering the SES code.

No cleaning would take care of that - so I had to replace it. I really didn't want to shell out over $100 for a new one. So I searched around and found a rebuilt one at RockAuto for around $50 after core return. I tried it thinking I could return it if it was a POS. But 1 week later no issues. Time will tell but so far - so good.

Hope this helps someone else.

[Cisc0]

A little help here. I have read the threads on this P1419 code and I have also cleaned out the Valve which was heavily sooted. After cleaning the valve and checking the hose I cleared the code and SES light was off for about 2 days. Fast forward to today and fooking light is back with the same code. Unfortunately I do not have that secondary MAF shown in the picture above on my 2002 3.0i, what I do have is part #6 in this diagram:


Can someone with a pre-facelift E53 that has had this code share in their possible solutions. TIA!

[Castillo1]

Hello I have a 2004 bmw x5 3.0, I already change the valve the hose and the Air Flow Sensor, I erased all the codes and after a couple of days the check engine light came up again with the same code, does anybody nows what else can be wrong with this, how can I fix it, please help.

Thank You

[ArmyX5]

Originally Posted by Castillo1

Hello I have a 2004 bmw x5 3.0, I already change the valve the hose and the Air Flow Sensor, I erased all the codes and after a couple of days the check engine light came up again with the same code, does anybody nows what else can be wrong with this, how can I fix it, please help.

Thank You

Did you check both air flow sensors? The one mentioned by ATLViking is the main air flow sensor and the one I circled on the left side of the picture above is the secondary air flow sensor. Also, check all your hoses. Is your air pump coming on and stay on for about 30-45 second or does it stop after 5-10 second?

[monty_yao]

I have a 2005 x5 3.0 and my wife drives it. Last month, I smelt burned engine oil whenever after drove it for like 10 minutes. So, I ordered a valve gasket from BavAuto and replaced that gasket. The old one was pretty hard. Now, the burned oil smell is gone and It was driving good for a week or so. After the last gas fill up, the SES light came on. I took it to Autozone and had the guy there read the code: P1419 and P0174. P0174 is system running lean, p1419 indicates the secondary Air Flow Senor not working. I think I'm going to replace the sensor first and hopefully, that will take care of P0174.

Does that sound like a way to go? I don't know how easy is it to take the valve off to clean.

thanks.

[monty_yao]

Just to follow up.

I cleaned the valve and that didn't help. I then ordered the secondary air sensor and reset the code. After 2+ week, the CES light is still not ON yet so I'm going to assume this is a good remedy.

[mfinghis]

This may be helpfull. Tested the pump first - disconnect the hosses, start the car with engine cold - working fine but only 10-15 seconds.I have tested the valve like army X5 suggeted - was working fine - cleaned it anyway. A friend with an OBD II read the air flow sensor was the problem. Repaced the sensor and the filter attached to it cleared the code and everything is ok so far.