Crown SP3020:
Code 27

Code 27 is battery low but is completely charge up but when going in either forward or reverse it codes 27, need help with code
  • Posted 7 Jun 2022 13:18
  • Discussion started by Hoist
  • California, United States
......
Showing items 1 - 3 of 3 results.
Next thing you can do is tune-up the oscillator card, you need the service terminal to do that and the crown service manual.
  • Posted 9 Jun 2022 16:20
  • Reply by LaGrange
  • Missouri, United States
Strong in mind, Strong in Health.
Thanks, water level is good and battery fully charge, also test truck with another good battery and still gives code 27. Also I replace the transistor, could I have a bad transistor can it cause code 27, I never seen this, any advise
  • Posted 8 Jun 2022 19:57
  • Reply by Hoist
  • California, United States
......
I suggest that you connect your meter leads to the battery cables and watch the voltage as you drive either direction.

More than a 20% decrease in voltage when a motor is energized indicates a seriously depleted battery.

I'll also suggest that you take a look at the water levels for each cell.

Lots of people ignore battery maintenance.
  • Posted 8 Jun 2022 09:09
  • Reply by LaGrange
  • Missouri, United States
Strong in mind, Strong in Health.

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