B1318 code?

ANONYMOUS

MEMBER
2008 MAZDA MX5
9,000 MILES

My 2008 MX5 showed codes B1318 and B1884 just before the 4 year service. The car was serviced by my Mazda dealer and reset.80 miles later the EML light is on again. This time the code is P0131. Is there a connection between these codes? Also Is there any way the Mazda dealer could have caused the P0131 code by incorrect service procedure? Thanks Roger

2 Replies

SQM

MECHANIC
6,383 POSTS

Hello,

The code B1318 is for the anti lock brake system and P0131 is a emission code. So they should not be connected. Its hard to say if the service procedure did something for the light to come on.

https://youtu.be/vMwTzURWXmk

https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor

I have attached the diagnostics steps for the P0131.

Let me know if you have any questions.

Thank you.

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Friday, July 16th, 2021 AT 10:42 AM

ASEMASTER6371

MECHANIC
52,797 POSTS

Good evening,

The B codes are for the restraint system in your car. They indicate low voltage in the system.

Every time I see low voltage, the first thing I recommend is checking the battery. A bad battery can cause this code.

https://www.2carpros.com/articles/car-battery-load-test

I attached the flow charts for both codes below. Follow the carts and let me know if you need any other help.

The 131 code has nothing to do with the B codes.

Roy

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Monday, July 19th, 2021 AT 6:14 PM

B1318 code?

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