MINI R59 EML issue...

[Master Of Puppets]

Have the code P15B9 on a 1.6 petrol Roadster, front right ABS sensor had a chafed through cable, replaced the sensor and cleared the code, the EML light is still on, no other codes but remains with P15B9 no matter how many time you clear it, is this possibly an example where the car needs to go through driving cycles to re-learn the ECU?, problem is the car is not currently taxed or insured, so is there an alternative way to clear it?

[E-bmw]

Point of note, an ABS fault code doesn't generally show an Engine Management Light.

This code can also apparently mean a vacuum leak/issue, so if the issue IS an EML on, then you may well have attacked the wrong issue.

Another point of note, if the ABS sensor was the issue they generally need to show wheel speed (as in drive the car) before they will self-reset.

The point of my reply, is that if there IS an EML you likely have not cleared the fault it is seeing.

What are you trying to use to reset the code?

[Master Of Puppets]

Yep that's the other possible issue here, because looking online there are 2 different descriptions of P15B9, one saying a vacuum issue,
on BMW, and other saying on MINI it's front right ABS sensor, obviously the MINI is a BMW product, but could they actually have
2 different definitions for that same code?

So lets say it is the vacuum issue, have you any tips for the first things to look at?, the Foxwell isn't giving a description, just the code.

Diagnostic is a Foxwell NT510 Elite.

[Richard-D]

Master Of Puppets said:

Yep that's the other possible issue here, because looking online there are 2 different descriptions of P15B9, one saying a vacuum issue,
on BMW, and other saying on MINI it's front right ABS sensor, obviously the MINI is a BMW product, but could they actually have
2 different definitions for that same code?

So lets say it is the vacuum issue, have you any tips for the first things to look at?, the Foxwell isn't giving a description, just the code.

Diagnostic is a Foxwell NT510 Elite.

Looking at your long term fuel trims will tell you whether or not you have a vacuum leak (in seconds, without touching anything in the engine bay).

Start the engine, allow to go into 'closed loop' running (can be confirmed with scan tool but takes less than a minute with modern cars), look for 'long term fuel trim' reading. This reading is a percentage, it should be in low single figures.