I had an issue were I was getting a false reading on one of the sensors. These are the steps I found to clear it (can't remember who originally posted this):
- Turn on the and key wait until system is fully booted up.
- Press the brake peddle down. Now this is the important part. You need to hear 2 clicks. One is the brake light switch and the 2nd click is the low pressure switch. Yes you need to press hard enough to get the second click.*
- While holding the brake peddle turn the key off and WAIT until the system completely shut down.
- Wait about 5 minutes then turn the key back on. Error should be cleared.
* I'm too deaf to hear clicks so for this part I just stood beside the spider and stood on the brake pedal to make sure it was pressed down hard
This cleared the code for me.
My problem started when I got road tar sprayed on my rear disc which transferred to the brake pads and contaminated them. I replaced the rear brake pads, topped the fluid etc but still got the error intermittently until I followed the steps above.
There is another almost identical process that's also supposed to work if the first one doesn't:
- Turn on the key and wait until system is fully booted up.
- Press the brake peddle down. Now this is the important part. You need to hear 2 clicks. One is the brake light switch and the 2nd click is the low pressure switch. Yes you need to press hard enough to get the second click.
- While holding the brake peddle turn the key off but this time before it fully shuts down, turn the key back on. The fault should be cleared.
