BMW 320d F30 engine management light - diagnostics?
Discussion
Wife's car. Light came on amber on Saturday. No change in performance, she drove it 20 miles home.
Drove it to main dealer last night for them to check today. Light went off a few hundred metres away from dealer. In total it's done around 50 miles with light on.
They just called me advising that it's showing no fault in their diagnostics.
They are asking if they can keep it until tomorrow and can one of the techs drive it home tonight to see if it reoccurs. I don't have a big problem with this if the diagnostics are showing nothing - but I expected that the fault would have shown when they plugged it in. Anyone with some knowledge on this please...?
Drove it to main dealer last night for them to check today. Light went off a few hundred metres away from dealer. In total it's done around 50 miles with light on.
They just called me advising that it's showing no fault in their diagnostics.
They are asking if they can keep it until tomorrow and can one of the techs drive it home tonight to see if it reoccurs. I don't have a big problem with this if the diagnostics are showing nothing - but I expected that the fault would have shown when they plugged it in. Anyone with some knowledge on this please...?
stevieturbo said:
If there is a fault light lit, there will be codes present. If the garage says otherwise, either they havent a clue how to use their equipment, or their equipment is unsuitable.
Find a competent garage
The light went out just before we arrived at the main dealer. I was still expecting the fault to be recorded though...Find a competent garage
What light came on ? Engine management light?
There will be a code (s) recorded, even if they are red herrings and caused by other reasons.
Do the main dealer mean, they have cleared the code and cannot find a fault that will set the light off and it therefore was just a "blip"? If so, keeping the car to encounter similar circumstances is a belt and braces way to be sure it is not a reoccuring condition.
There will be a code (s) recorded, even if they are red herrings and caused by other reasons.
Do the main dealer mean, they have cleared the code and cannot find a fault that will set the light off and it therefore was just a "blip"? If so, keeping the car to encounter similar circumstances is a belt and braces way to be sure it is not a reoccuring condition.
Coilspring said:
What light came on ? Engine management light?
There will be a code (s) recorded, even if they are red herrings and caused by other reasons.
Do the main dealer mean, they have cleared the code and cannot find a fault that will set the light off and it therefore was just a "blip"? If so, keeping the car to encounter similar circumstances is a belt and braces way to be sure it is not a reoccuring condition.
Yes it was the engine management light. I was specifically told that there was no fault recorded, not that they had cleared it. I'll query this when I pick the car up later today. Thanks...There will be a code (s) recorded, even if they are red herrings and caused by other reasons.
Do the main dealer mean, they have cleared the code and cannot find a fault that will set the light off and it therefore was just a "blip"? If so, keeping the car to encounter similar circumstances is a belt and braces way to be sure it is not a reoccuring condition.
Coilspring said:
What light came on ? Engine management light?
There will be a code (s) recorded, even if they are red herrings and caused by other reasons.
Do the main dealer mean, they have cleared the code and cannot find a fault that will set the light off and it therefore was just a "blip"? If so, keeping the car to encounter similar circumstances is a belt and braces way to be sure it is not a reoccuring condition.
Not if there's a problem with the engine warning light circuitThere will be a code (s) recorded, even if they are red herrings and caused by other reasons.
Do the main dealer mean, they have cleared the code and cannot find a fault that will set the light off and it therefore was just a "blip"? If so, keeping the car to encounter similar circumstances is a belt and braces way to be sure it is not a reoccuring condition.
Ok the chances are very slim but it's happened in the past and will happen again
Going by the above, if while driving the vehicle the warning light comes on and goes out again and the car/engine is working without any problems, no faults have been registered by the ECU..............there could be a problem with the warning light circuit or the ECU
Think I've got to the bottom of it now.
I asked the service adviser who originally gave me the "no fault" message to check this. There was a fault code but becuase light had gone off the techs wanted to run the car to see if this reoccured or some other problem occured.
So duff info from the service adviser who was apologetic and said she'd not been in the job long. Fair enough AFAIC.
New O2 sensor being fited under warranty which hopefully will sort it.
Thanks
I asked the service adviser who originally gave me the "no fault" message to check this. There was a fault code but becuase light had gone off the techs wanted to run the car to see if this reoccured or some other problem occured.
So duff info from the service adviser who was apologetic and said she'd not been in the job long. Fair enough AFAIC.
New O2 sensor being fited under warranty which hopefully will sort it.
Thanks
Penelope Stopit said:
stevieturbo said:
Penelope Stopit said:
Nope
Faulty wiring could cause any warning light to illuminate
And then we get back into the real worldFaulty wiring could cause any warning light to illuminate
No problem
Many people don't take everything into consideration
Didn't expect thee to be one of the masses
NotBenny said:
Penelope Stopit said:
stevieturbo said:
Penelope Stopit said:
Nope
Faulty wiring could cause any warning light to illuminate
And then we get back into the real worldFaulty wiring could cause any warning light to illuminate
No problem
Many people don't take everything into consideration
Didn't expect thee to be one of the masses
In this case the OP was given bad information, there was a fault logged
If no fault was logged the possibility of a warning light circuit fault would be high on anyones list
By anyone I mean anyone who knows the job inside out
You mention "unlikely"
If something is unlikely to be causing a problem is it best left alone ?
stevieturbo said:
The most likely reason for no codes.....is the person cannot use the equipment, or the equipment is not capable of reading the codes.
The least likely of all scenarios is a faulty EML light.
I agree but....The least likely of all scenarios is a faulty EML light.
My opinion is based on the kit and person using it being up to the job
Once user error and rubbish equipment are brought into a debate everything becomes cloudy
Gassing Station | Engines & Drivetrain | Top of Page | What's New | My Stuff