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P0156 FORD - no voltage measured to o2 sensor

Eng light on with code PO156. Replaced o2 sensor did not fit. Measure o2 sensor voltages with scanner all voltages are normal except bank 2 sensor 2. No voltage present bank 2 sensor 2.

Is there common cause for this?

Is there a wiring diagram available online?

Would appreciate the help!

Vehicle: 2001 ford windstar 3.8
asked Apr 27, 2013 by anonymous

1 Answer

Measure for voltage power and ground with the 02 sensor in question disconnected,

answered Apr 27, 2013 by Reynaldo (6,609 points)

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