Check engine light on

1996 LINCOLN MARK III
166,685 MILES
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THIN MAN
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I am confused, I have had both o2 sensors and catalytic converter on passenger side replaced on my car. Because both bank 2 sensors were coming up with heater malfunction. So I changed them, after drive cycle check engine light came back on, so I changed my leaking catalytic converter. Drive cycle again, light comes back on. am I missing something?
Apr 9, 2018 at 6:00 AM
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ASEMASTER6371
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Good morning.

Lets start with the original codes. what were the codes?

Roy
Apr 9, 2018 at 7:29 AM
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THIN MAN
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P1151 lack of h025s-21, h02s signal low input.
P0161 ho2s-22 bank 2 sensor 2 heater circuit malfunction.
P0401 insufficient EGR flow detected.
Apr 9, 2018 at 8:42 AM
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ASEMASTER6371
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the 401 is common for the delta pressure sensor.

Chart below.

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Apr 9, 2018 at 9:21 AM
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ASEMASTER6371
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Okay.

1151 chart and possibilities below.

Roy
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Apr 9, 2018 at 9:23 AM
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THIN MAN
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That may be correct, but I have heard that because of the 02 sensor showing, that is what causes the EGR error.
Apr 9, 2018 at 9:24 AM
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ASEMASTER6371
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the 161 is for the ABS pump motor. it may be internally shorted.

Roy
Apr 9, 2018 at 9:26 AM
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ASEMASTER6371
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The 401 code, yes.

Roy
Apr 9, 2018 at 9:28 AM