S858A - Engine settings for low-quality fuel

KarimS · 10-17-2021, 04:43 AM

Hi,
I have an F36 purchased from a country with low quality fuel that has this S858A code. I've shipped this car to UAE and we have 98 octane fuel here. Is it possible to get rid of this code? If I do will the low compression setting go away? any adverse effects to do this?

thanks

Billfitz · 10-17-2021, 08:11 AM

The code indicates that it has a low compression engine. There's nothing you can do to change that without replacing the pistons.

10-17-2021, 04:43 AM	#1
KarimS Private 21 Rep 63 Posts Drives: 2024 M340i Join Date: Feb 2018 Location: Dubai iTrader: (0)	S858A - Engine settings for low-quality fuel Hi, I have an F36 purchased from a country with low quality fuel that has this S858A code. I've shipped this car to UAE and we have 98 octane fuel here. Is it possible to get rid of this code? If I do will the low compression setting go away? any adverse effects to do this? thanks
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10-17-2021, 08:11 AM	#2
Billfitz Lieutenant General 8239 Rep 16,076 Posts Drives: '15 328iX GT Join Date: Jan 2015 Location: New Hampshire iTrader: (0)	The code indicates that it has a low compression engine. There's nothing you can do to change that without replacing the pistons.
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