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Battery needs to be changed

Tiny
JOHN HOWBOWTIT
  • MEMBER
  • 2002 BMW 325
  • 2.3L
  • 6 CYL
  • 2WD
  • MANUAL
  • 35,000 MILES
Whats a mod $12 meaning in a obdII scan tool? Was pressing odometer reset to get hidden tests then service light came on so I got scanner out & it said mod $12 and some misfire 300 code and in 1000 something code, I erased codes so I don't know exactly which numbers but mod12 for sure, all because battery needs to be changed.
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Thursday, March 23rd, 2017 AT 3:37 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
If the battery voltage is low it will cause all kinds of weird things to happen, I would change the battery and then clear the codes to see what happens.

Here is a guide to let you know what you are in for when changing the battery,

https://www.2carpros.com/articles/how-to-replace-a-car-battery

Please let me know if you need anything else to get the problem fixed.

Best, Ken

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Monday, March 27th, 2017 AT 4:12 PM

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