Fault Codes
- Thread starter JamieIsf
- Start date
What it is saying is that both post cat lambdas are down or switched off. Now what it doesn’t say is when the codes were triggered and the misfire on 5 is not related so they may be historical. First I'd clear the codes and take it for a drive and then re-read the codes. If the lambdas are still down, either both are dead or switched off. If you have access to inpa or similar you can see what is going on and try resetting the adaptations to see if it triggers them or test them with a multimeter to see if they are dud or take the 50/50 punt and just buy new ones.
Strange they are all showing bad signal and a duff heater on the one, check the wiring connections first, disconnect and spray some contact cleaner in before lashing out on replacements. Once cleaned clear the codes and see if any come back. I would expect the duff heater one will come back if the heater circuit in it is burnt out.
colb said:
Always clear codes first and re-read after driving, 2 of them don't relate. Trying to fix a problem that has already been fixed is not worth while and codes can be erratic/historic and are not always the issue merely a symptom, that's why you ultimately need live data for more complex diagnosis.
Been having a trawl around the web regarding your codes particulaly the No Signal codes, possibility there is a fuse gone in their circuit, have you checked for blown fuse, maybe a 30amp fuse. Check the main fuse board and the ones in the box in engine bay.
Might be a good idea to view the sensors in live data with diagnostics to see if there is any activity with the engine running, if they are flatline then that may well point to a blown fuse.
Might be a good idea to view the sensors in live data with diagnostics to see if there is any activity with the engine running, if they are flatline then that may well point to a blown fuse.
To update you all further, I checked the fuses in the engine bay, and none were blown. I didn’t take any out on the fuse box in the car as none would seemed to have affected the area.
I think it’s unlikely that both would have gone, but hey.
Rather avoid the £150 replacement cost for each if I can!
I think it’s unlikely that both would have gone, but hey.
Rather avoid the £150 replacement cost for each if I can!
Not sure of the c110's capability to view live data, INPA would view live data from the exhaust sensors as would some other diagnostics I use Gendan Engine Check Pro Diagnostics to view live data, it shows them in nice clear graph form, find that format is good for viewing fuel trims as well. Both used on a Laptop with their appropriate interfaces and usb cables.