Couple codes - 26 and 28 on Peake reader

mfizzlenyc · 3rd April 2012, 23:51

Scanned the car no SES light but got 26 and 28 cyl 5-8 oxygen sensor - heater control ????? Never had this one before any one know exactly what that is ??

Sailor24 · 4th April 2012, 00:06

Have you been under the car doing any work?

mfizzlenyc · 4th April 2012, 00:22

Yes just had the rear subframe bushings done

Sailor24 · 4th April 2012, 00:29

If the O2 were unplugged my bet is the drivers side got plugged back in incorrectly. It is not to hard to do the two feeds plug together nicely and the two senors do the same. With all the direction changes it looks perfect then all of a sudden O2 heater codes. A lot of us have done it. Check that first, it is logical. The heaters (4) all run from the same fuse so that is not it and to lose both pre and post sensor heater circuits at the same time is against the odds also. Possibly they just got knocked free during the work.

ard · 4th April 2012, 01:05

When I saw this I though 'yes, O2s not connected- you get a heater error immediately and the DME never checks past this point'...

but why no SES light??!?!?!

mfizzlenyc · 4th April 2012, 01:59

Thanks sailor !!! I'll bring the car to the shop in the am and put it on the lift
I'll get back to the thread once I find the issue

Ard I'll Pm you later about why no SES

ard · 4th April 2012, 03:02

Quote:

Originally Posted by mfizzlenyc

T
Ard I'll Pm you later about why no SES

No need. Assume: With stock programming you will have SES light set. If programmed to ignore O2 sensors you will not get a light.

Sailor24 · 4th April 2012, 03:06

Even with stock no light or other O2 codes???? Maybe because we check so fast after working on our cars and O2 code would be slow response and that takes several attempts and different tests for DME to diagnose.

mfizzlenyc · 4th April 2012, 16:46

Quote:

Originally Posted by Sailor24

Even with stock no light or other O2 codes???? Maybe because we check so fast after working on our cars and O2 code would be slow response and that takes several attempts and different tests for DME to diagnose.

Gotta hand it to you you were almost spot on!!! what happened is I plugged the drivers bank O2s together instead of to the car

uich:

Thanks Sailor for the help the car is running super strong again sometimes I have to question myself why I want to supercharge her

M5 London · 4th April 2012, 17:13

Quote:

Originally Posted by mfizzlenyc

Gotta hand it to you you were almost spot on!!! what happened is I plugged the drivers bank O2s together instead of to the car uich:

Thanks Sailor for the help the car is running super strong again sometimes I have to question myself why I want to supercharge her

Quote:

Originally Posted by Sailor24

If the O2 were unplugged my bet is the drivers side got plugged back in incorrectly. It is not to hard to do the two feeds plug together nicely and the two senors do the same. With all the direction changes it looks perfect then all of a sudden O2 heater codes. A lot of us have done it. Check that first, it is logical. The heaters (4) all run from the same fuse so that is not it and to lose both pre and post sensor heater circuits at the same time is against the odds also. Possibly they just got knocked free during the work.

He was SPOT ON, rather than almost....!