AA Downpipe... and now a Check Engine Light

[Extreme Power House]

If I continue to get the CEL I’m going to replace my sensors before going back to AA

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[RAWSupra]

be very careful not to contaminate the sensors when you remove/install them ... i NEVER touch the heads of the sensors and i dont use grease or loctite on the threads.

 

[EDUARDOP10]

Make sure the sensor is actually plugged in. Unplug it and plug it back in. Then clear the codes and see if it comes back.

Many of us have had our AA pipes in for a long time without a single issue.

I just got a CEL today after only having the downpipe for a couple of weeks and a couple hundred miles later. How does one clear the CEL code? kinda new to this sorry. thank you,

 

[R1Outcast]

I just got a CEL today after only having the downpipe for a couple of weeks and a couple hundred miles later. How does one clear the CEL code? kinda new to this sorry. thank you,

You can clear with JB4 if you have one.

I got a CEL after I installed my AA high-flow catted. I cleared it once, and it came back after about a week. Then I replaced the sensor, but the CEL came back again after about a week. After I cleared it that time though, the light hasn't returned. It's been a few months now.

 

[Decentness]

I just got a CEL today after only having the downpipe for a couple of weeks and a couple hundred miles later. How does one clear the CEL code? kinda new to this sorry. thank you,

Keep in mind, there is a chance it isn't the cat triggering the light and could be an 02 sensor. Reason I mention it is, if it's not the cat and is the 02, the light will just come back on most likely anyways. So I'd see what code it actually threw and go from there

 

[EDUARDOP10]

You can clear with JB4 if you have one.

I got a CEL after I installed my AA high-flow catted. I cleared it once, and it came back after about a week. Then I replaced the sensor, but the CEL came back again after about a week. After I cleared it that time though, the light hasn't returned. It's been a few months now.

You can clear with JB4 if you have one.

I got a CEL after I installed my AA high-flow catted. I cleared it once, and it came back after about a week. Then I replaced the sensor, but the CEL came back again after about a week. After I cleared it that time though, the light hasn't returned. It's been a few months now.

i don't have a JB4 unfortunately. One of my friends who works at a dealer just cleared it for me though. Turns out it was the O2 sensor. if it comes up again, ill just get new sensors. Which one did you end buying? OEM from toyota? thank you

 

[EDUARDOP10]

Keep in mind, there is a chance it isn't the cat triggering the light and could be an 02 sensor. Reason I mention it is, if it's not the cat and is the 02, the light will just come back on most likely anyways. So I'd see what code it actually threw and go from there

Thank you ! you were correct, it indeed was the O2 sensor.

 

[Decentness]

Thank you ! you were correct, it indeed was the O2 sensor.

No problem, glad to help!

 

[R1Outcast]

i don't have a JB4 unfortunately. One of my friends who works at a dealer just cleared it for me though. Turns out it was the O2 sensor. if it comes up again, ill just get new sensors. Which one did you end buying? OEM from toyota? thank you

I bought from ECS.
Genuine BMW - 11788689863 - LAMBDA MONITOR SENSOR (11-78-8-689-863)

 

[Extreme Power House]

I just got a CEL today after only having the downpipe for a couple of weeks and a couple hundred miles later. How does one clear the CEL code? kinda new to this sorry. thank you,

buy an OBD reader, JB4 or go to AutoZone and they will clear it for you.

if it happens again, get a picture of the code and file a warranty claim with active autowerke

 

[EDUARDOP10]

I bought from ECS.
Genuine BMW - 11788689863 - LAMBDA MONITOR SENSOR (11-78-8-689-863)

Thank you , i appreciate it !

 

[EDUARDOP10]

buy an OBD reader, JB4 or go to AutoZone and they will clear it for you.

if it happens again, get a picture of the code and file a warranty claim with active autowerke

Okay, thank you for the reply. Will do if it pops back up !

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