I've seen lots of contradictary information on here as to what an ECU fault code ACTUALLY means.
I don't mean what does each code mean, that is well documented.
The 2 interpretations seem to be......
1. If you get a fault code reported by the ECU, then it has detected a fault with the particular sensor or the circuit to it.
Thus the ECU takes precautionary measures. i.e. I can't get anything sensible from the DET sensor so I'm retarding the timing and jamming open the boost solenoid til you sort it out.
2. A particular sensor has been triggered. i.e. the DET sensor detects detonation.
I am favouring option 1 as I have seen info that the DET sensor will only trigger ignition retard in the ECU whilst the detonation is occuring and then the ECU reverts back to normal function once it stops.
I think this is an important thing that we need to get straight, particularly for our new members who may misinterpret previous posts regards ECU fault checks.
e.g.
Q. My car seems down on power. Is my car detonating?
A. Dunno. Do a Fault Code Check - that'll tell you.
If option 1 is correct - no it won't!
Sorry, long post
Someone has a definitive answer :lol:
Cheers
GeeTee 8)
I don't mean what does each code mean, that is well documented.
The 2 interpretations seem to be......
1. If you get a fault code reported by the ECU, then it has detected a fault with the particular sensor or the circuit to it.
Thus the ECU takes precautionary measures. i.e. I can't get anything sensible from the DET sensor so I'm retarding the timing and jamming open the boost solenoid til you sort it out.
2. A particular sensor has been triggered. i.e. the DET sensor detects detonation.
I am favouring option 1 as I have seen info that the DET sensor will only trigger ignition retard in the ECU whilst the detonation is occuring and then the ECU reverts back to normal function once it stops.
I think this is an important thing that we need to get straight, particularly for our new members who may misinterpret previous posts regards ECU fault checks.
e.g.
Q. My car seems down on power. Is my car detonating?
A. Dunno. Do a Fault Code Check - that'll tell you.
If option 1 is correct - no it won't!
Sorry, long post
Someone has a definitive answer :lol:
Cheers
GeeTee 8)