iOnlyownMymind wrote:here's a legitimate question. You don't have to answer if you don't want to, but I definitely appreciate it! Got the codes read for the Blazer. P0030 Ho2s heater control circuit, and P0135 02 heater circuit. Any recommendations for directions from here? I'm definitely not a auto person so any help is appreciated.
Let me get on the work computer with all data tomorrow so I can be positive .. But I recall a Trailblazer with the p0030 code not to long ago.. Is that what you have? if so, what year and engine size?? P0135 is a bank 1 sensor 1 heater code that is almost always a malfunctioning o2 sensor and may be causing the other code.. let me know..



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