Durametric fault codes, Brake wear light

[Dharn55]

I have a check engine light and two fault codes showing on my Durametric.

P0154, Porsche fault code 18, Oxygen sensor ahead of cat 4-6

P0119, Porsche fault code 5 Oxygen sensor ahead of TWC, bank 2, heating

Not sure what to make of these, think I may have damaged the wires to the Oxygen sensor. Any help on this would be appreciated.

Also, I have a brake wear light on. Thought I might have a broken sensor (bought a set just in case) but today I checked the pads and tested the the sensors with a voltage meter. The pads are fine, and the sensors all have continuity, and are plugged into the receptacle for the pad and ABS sensors. My next thought was that one of the cables from the receptacles to the computer might be bad, but the ABS and PSM are working fine. If one of these cable wa a problem I would think I would get a ABS or PSM light/fault. Any ideas on this?

[Loren]

P0154 Oxygen Sensor Ahead of TWC, Bank 2 – Interruption of Signal

Fault area:

- Open circuit in signal wire or ground wire

- Wiring harness

- Oxygen sensor

- DME control module

I think you mean P1119

P1119 (Porsche fault 5) Oxygen sensor heating 2 ahead of TWC

This would also make one think that the wiring harness or connector on that sensor is not right.

Brake sensors are a simple one wire circuit. Any break in that one wire (or bad ground at any wheel) all the way back to the cluster will turn the light on.

[Dharn55]

Loren - thanks for your prompt reply. You were right the second code was P119. Recently I had the headers and cats off to replace the oil pump and retime the cams. I had decided to separate the headers for the cats (in all my previous engine drops I took them off bolted together) to replace the gaskets. It turned out that my cats are bolted to the headers not with nuts and bolts, but with studs that were pressed into the flanges on the cats. The studs and the nuts on them were completely corroded and some broke in trying to remove them. I decided to drill them out and it was extremely hard to do. Ended up with the cats laying on the sensors at times and I think I may have damaged some of the wires at the sensors. I ended up only separating one of the cats and headers as it was so difficult to drill them out. Probably will need to replace some of the sensors.

Are both of these errors codes for the same sensor, bank 2 before the cat?

As for the brake wear sensors, I understand that these are simple one wire circuits. Thats why I assumed that I had one with a damaged wire. But I removed and checked each sensor for continuity of the wire/circuit, and they were all good. Also checked to see if they were properly plugged into the receptacle by each wheel that has both the brake wear sensor and the ABS sensor plugged into it, and they were plugged all the way in. Again, my next thought was that one of the receptacles, or the cables from them into the car was faulty. But it would seem if the cable was bad the ABS sensor would also show a fault. I can always try to "short out" each receptacle to see if this removes the brake wear light. I don't think that there is a way to determine which wheel is showing the fault with a Durametric. Still puzzled by this light, must be an open circuit somewhere.

[Loren]

Yes - both point to the same sensor (bank 2 pre-cat).

Yes, the connectors could have a bad connection and are mostly probable if none of the other wiring has been disturbed.