P1647 on drive today
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Join Date: Apr 2012
Location: Summerville, South Carolina
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P1647 on drive today
after months of error free driving, got a P1647 ECM HO2S control malfunction – B bank, upstream. Possible causes: HO2S heater failure; HO2S sensing circuit short circuit to ground or high voltage; HO2S sensing circuit open circuit; ECM failure. No other codes, car drove fine with no issues other than CEL. Assuming these are still the original HO2 sensors as I have had the Mistress 12 years and yet to replace these, began the search and damn these are expensive - prices from $175 ea up to $435 - guess I will be spending some money in the near future
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sklimii (11-01-2023)
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sklimii (11-01-2023)
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sklimii (11-02-2023)
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