ABS, stability, engine check lights
Discussion
Morning all,
Yesterday I drove 140 miles to work with no problems. At the end of the day I came back and started the car, it started fine as normal but I immediately got the ABS fault, stability control off, and engine check lights/ warnings appeared.
I had a quick look under the bonnet and didn't notice anything, aux belt was still on.
Car drove fine on the short drive to hotel, no issues other than the warning lights.
put the key in this morning and still the same warnings.
Any ideas? I'm tempted to just reset the codes and see if it is just a spurious occurrence.
Cheers
Mike
Yesterday I drove 140 miles to work with no problems. At the end of the day I came back and started the car, it started fine as normal but I immediately got the ABS fault, stability control off, and engine check lights/ warnings appeared.
I had a quick look under the bonnet and didn't notice anything, aux belt was still on.
Car drove fine on the short drive to hotel, no issues other than the warning lights.
put the key in this morning and still the same warnings.
Any ideas? I'm tempted to just reset the codes and see if it is just a spurious occurrence.
Cheers
Mike
Sorry I don't know the correct way to reset the lights. If the battery and charging system are OK, you could disconnect the battery and pull out the PCM fuse, then leave it to power down for a few minutes. That may clear the system. If you have a Monaro the PCM fuse is located in the fuse box on the drivers side of the engine bay.
John
John
Edited by mfp4073 on Tuesday 26th June 09:21
If a battery is shagged it can read OK with no load across it and then drop off dramatically once under load, so may still be worth a try.
Certainly given so many lights came on at once, my first thought would be battery.
Fundamentally the various signals from around the car are considered either on or off, and lights are illuminated if something is wrong.
If the voltage through the system is low, the 'on' signal could be weak enough that it isn't above the threshold to be considered 'on' by the various control modules, and suddenly you have a huge array of faults...
Certainly given so many lights came on at once, my first thought would be battery.
Fundamentally the various signals from around the car are considered either on or off, and lights are illuminated if something is wrong.
If the voltage through the system is low, the 'on' signal could be weak enough that it isn't above the threshold to be considered 'on' by the various control modules, and suddenly you have a huge array of faults...
350 said:
I've got an OBD reader at home...
Although I've heard that most aren't that useful and give just codes related to the engine? Any particular one you recommend that will diagnose potential ABS faults?
A basic OBD reader should provide those fault codes... otherwise I'd search for a local owner who would let you borrow an EFI unit.Although I've heard that most aren't that useful and give just codes related to the engine? Any particular one you recommend that will diagnose potential ABS faults?
SturdyHSV said:
If a battery is shagged it can read OK with no load across it and then drop off dramatically once under load, so may still be worth a try.
Certainly given so many lights came on at once, my first thought would be battery.
Fundamentally the various signals from around the car are considered either on or off, and lights are illuminated if something is wrong.
If the voltage through the system is low, the 'on' signal could be weak enough that it isn't above the threshold to be considered 'on' by the various control modules, and suddenly you have a huge array of faults...
This. Voltmeter is no good you need a load tester.Certainly given so many lights came on at once, my first thought would be battery.
Fundamentally the various signals from around the car are considered either on or off, and lights are illuminated if something is wrong.
If the voltage through the system is low, the 'on' signal could be weak enough that it isn't above the threshold to be considered 'on' by the various control modules, and suddenly you have a huge array of faults...
I once had what sounds like a similar issue, turned out to be a wheel bearing needing replaced, the rear bearing is pressed into the hub and carries the ABS pick up ring, I changed the mini ABS wiring looms and the sensors but it made no difference so then got the bearing changed and voila..fixed.
PapaT said:
I once had what sounds like a similar issue, turned out to be a wheel bearing needing replaced, the rear bearing is pressed into the hub and carries the ABS pick up ring, I changed the mini ABS wiring looms and the sensors but it made no difference so then got the bearing changed and voila..fixed.
Wheel bearing - easy fix? Stupid question!Gassing Station | HSV & Monaro | Top of Page | What's New | My Stuff