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    Thread: O2 Sensor code - P0053 Heater resistance Bank 1 Sensor 1

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    1. 09-20-2016, 10:32 PM #13
      Enjoyneering
      Enjoyneering is offline
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      New update guys.

      Looks like 8.5v is a normal voltage between the supply and ground at the connector. The ECU powered by 5v source.
      - When the transistor is fully closed, the voltage on the pins is around Vbat-(5v..3v) or 8.5v in my case.
      - When the transistor is fully opened, the voltage on the pins should be Vbat-0.6v or 11.4v in my case.
      Last edited by Enjoyneering; 09-21-2016 at 03:17 PM.
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