Hi there
This code points to a problem with the heater circuit on the bank 1 rear O2 sensor. In most cases the sensor itself is the cause of the code and replacing it should resolve the problem. It will not damage anything to run like this.
P0037 SUZUKI - HO2S12 Heater Control Circuit Low Read more: https://www.autocodes.com/p0037_suzuki.html
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