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To be clear, I cleared the CEL before I coded the first time around. Is that true, if it pops up again and have to run the drive cycle again? I coded out following the first post, but have not completed ~50 miles to see if I get a CEL again. I'm getting more ready monitors than I have in the past so far.
If you coded out 2nd oxygen sensors - it will immediately show "not available" or something like that, same for SAI. No need to drive 50 miles to see these.
Well I drove about 50 miles today, and using the OBD2 reader, all status are now "Ready", but I threw a CEL. I def coded some stuff out. I'm going to use additional site provided for diagnostics:
If you coded out 2nd oxygen sensors - it will immediately show "not available" or something like that, same for SAI. No need to drive 50 miles to see these.
0178 and 0182 are not sticking. I’ve set to “aus” and the CEL remains and after cycling the car on and off, I check again and they went back to “ein”
The shop I brought it to in the past said they had that issue as well where coding isn’t sticking. They said I should buy a used ecu to clone…thoughts? Is there something I’m doing wrong?
Very odd, last night I tried it about 5x. It showed that it stuck at one point. I cycled the engine/accessory and CEL was still present. I gave up after about an hour, and this morning I was going to attempt it again, I had Xentry connected and didn't even bother to look at my dash. CEL had disappeared, I ran a diag with an OBD2 scanner, and have 2 confirmed codes, but no CEL. I hope this works out...
Disclaimer: First of all this is for diagnostic purpose only!!! Second in most country's it's quite illegal to modify these on a road going vehicle, in fact in California it's illegal even if the vehicle is for off road purposes only. You should only use this to locate a problem and fix it.
You'll need a Dev mode SDS unit that's unlocked.
1. Select your car
2. Go to Control Units
3. Go to Drive
4. Go to MESFI 2.8
5. Go to Development Data
6. Go to Control Unit Adaptations
7. Go to Control Unit Adaptations(Variant Coding)
8. Go to Implizite Kodierung ME281 AMG C6-Stand
For EGR scroll down to 0176 and change Diagnose ein to Diagnose aus
For Secondary Air Injection scroll down to 0178 and change Diagnose ein Diagnose aus
For Post Cat 02 sensors scroll down to 0182 and change Diagnose ein Diagnose aus
That will disable each of those in the computer.
Got check engine light PO410, would u replace the air pump to get rid of the code!??
Thx
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