I Found out why my MIL Light was on. OBDII software

chrismann85

Active member
 West Midlands
My ELM327 diagnostic tool finally arrived. Hooked it up to the car and got even more confused.
Took a couple of screenshots as some of you may find it interesting

This is a shot of the code that was read:
OBDIIMILCode-1.jpg

This is a shot of the O2 sensors:
OBDIIO2sensors.jpg
I'm only running a 4cyl engine so not sure why its reading a bank 2 sensor!
Anybody got any ideas on where I should go from here? I didn't want to clear the code just in case.
My next steps are to get a look at the catalyst and try to find the sensors to make sure they are both connected.
If only the rain would go away!
 
Wouldn't be unusual for a DTC to be used to differentiate it's position from 'Bank 1' even if its a straight 4 or 6 pot not a 'v'.
 
DTC's (fault codes) have ageing criteria assigned to them when the software in the ECU is configured. If it was an intermittant one then you might have run the car without the fault present sufficiently long for it to clear itself. Some codes will have a very short lifetime before self clearing, and others if deemed serious enough will never ever clear themselves and need the diagnostic tool to do it.

I don't know that software, but it's also possible it clears the codes once it's read them out. If it has done that and the fault still exists, then it won't be long until you see the MIL again!
 
cj_eds said:
I don't know that software, but it's also possible it clears the codes once it's read them out. If it has done that and the fault still exists, then it won't be long until you see the MIL again!

You called it! The light is now back on... :cry: I think its due for inspection anyway so will get them to have a look
 
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