P015b help!!
Thread Starter
5th Gear
Joined: May 2018
Posts: 5
Likes: 1
P015b help!!
So I've got Texas speed header and off road x pipe. I had my car professionally dynotuned after install and had the rear 02 sensors deleted in the tune. Everything was fine for 5 months, now I'm getting P015B code thrown delay rich to lean. My code reader tells me bank 1 sensor 1. I have changed this 02 sensor and tried to clear the code but it makes no difference. All my wiring looks good, not melted.
Any advice? Extremely frustrating.
Any advice? Extremely frustrating.
Drifting
Joined: Oct 2017
Posts: 1,982
Likes: 312
From: North Carolina
So I've got Texas speed header and off road x pipe. I had my car professionally dynotuned after install and had the rear 02 sensors deleted in the tune. Everything was fine for 5 months, now I'm getting P015B code thrown delay rich to lean. My code reader tells me bank 1 sensor 1. I have changed this 02 sensor and tried to clear the code but it makes no difference. All my wiring looks good, not melted.
Any advice? Extremely frustrating.
Any advice? Extremely frustrating.
Thread Starter
5th Gear
Joined: May 2018
Posts: 5
Likes: 1
Figured out the issue. For some reason the codes would not clear, not even fit a moment. I tried to clear the codes while driving (normally the rule is the engine shouldn't be running) and all the codes cleared fine and didn't return.
And the reason you delete the sensors is because there's no post cat o2 sensors if you have long tube headers. No purpose.
And the reason you delete the sensors is because there's no post cat o2 sensors if you have long tube headers. No purpose.
Le Mans Master
Joined: Oct 2014
Posts: 8,657
Likes: 2,718
From: Atlanta GA
Matt , the secondary O2 sensor's only measure the efficiency of the cats and are not needed for the proper operation of the engine ( that is unless you get a clogged cat , but at that point I think you would know 
)
Dave
)Dave
2nd Gear
Joined: Jun 2025
Posts: 2
Likes: 0
So the issues went away from just clearing the codes while it was running? Please let me know what fixed your issue if that’s not the case!
Figured out the issue. For some reason the codes would not clear, not even fit a moment. I tried to clear the codes while driving (normally the rule is the engine shouldn't be running) and all the codes cleared fine and didn't return.
And the reason you delete the sensors is because there's no post cat o2 sensors if you have long tube headers. No purpose.
And the reason you delete the sensors is because there's no post cat o2 sensors if you have long tube headers. No purpose.
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