S

Sylvester

Member

• May 1, 2017

• #1

I'm getting a Lambda fault on bank 1 and 2
oxygen sensor aging fault downstream bank 1

I changed the the O2 sensor on the passenger side and error still apprears. What could be wrong?

 

Saint.V8

Dyed-in-the-wool 100% RR Junkie

Full Member

• May 1, 2017

• #2

What is the exact fault logged....??

Bank 1 and 2 are the two sides of the engine, so changing one will not correct the other....

 

S

Sylvester

Member

• May 1, 2017

• #3

See RSW Solution error log attached file.

Auto Zone Log says:
P1171 System too lean. Bank A & Bank B
P0021 Intake Camshaft Position Timing-Over-Advance (Bank 2)

 

Attachments

• L322 Eroor codes.pdf

  4.6 MB · Views: 224

S

Sylvester

Member

• May 2, 2017

• #4

Also the throttle body has 4 inch C-shape hose coming out the side of it which sucks air. I'm not she what connects to it.

 

Saint.V8

Dyed-in-the-wool 100% RR Junkie

Full Member

• May 2, 2017

• #5

I think your issue is that 4" pipe....your results show it is too lean, as such it is sucking in to much air that is unmetered by the MAF sensor.

Can you post a photo of this pipe?

 

R

Rick-the-Pick

Active Member

• May 2, 2017

• #6

When the o2 sensors start screaming I always go to the maf sensor. ****e going in, ****e coming out.

 

S

Sylvester

Member

• May 2, 2017

• #7

See attached. This hose sucks air and is attached to the throttle body

 

Attachments

• 2004 L322 Intake Air.pdf

  5.3 MB · Views: 759

Saint.V8

Dyed-in-the-wool 100% RR Junkie

Full Member

• May 2, 2017

• #8

Looks to be the Secondary Air Injection Vacuum Pipe....it should go under the throttle body to something under there.....

You can see it in the very bottom of this photo from mine a while ago....

If this is sucking in un-metered air it will through lean faults and Lambda control faults as the engine is getting air the MAF doesn't know about.

 

Last edited: May 2, 2017

S

Sylvester

Member

• May 3, 2017

• #9

I see the hose has another hose inside it. I don't recall seeing that smaller hose. I will take another look.

 

S

Sylvester

Member

• May 3, 2017

• #10

I think found the connection to the secondary hose. but now I'm getting
Lambda control adaption fault bank 1.
DM-TL small leak (1.0mm).
Camshaft sensor bank 2. I put a new one on and it still comes back on.