vdp 2001 dtc p1646.
Joined: Mar 2008
Posts: 2,521
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From: Powell, Ohio U.S.A. 43065
RE: vdp 2001 dtc p1646.
Hey guys,
O2 sensor yes, but I haven't seen where the phantom fuel pump wiring was inspected. And the car has no other apparent faults. I'm missing something again.
O2 sensor yes, but I haven't seen where the phantom fuel pump wiring was inspected. And the car has no other apparent faults. I'm missing something again.
Joined: Mar 2008
Posts: 59
Likes: 0
From:
RE: vdp 2001 dtc p1646.
My scanner book says the code is A bank upstream O2 sensor. Possible Causes:
O2 sensor heater failure
O2 sensor sensing circuit short circuited to ground or high voltage
O2 sensor sensing circuit open
ECM failure
It seems ECM failure is the last one on a lot of codes.
I would check the O2 wiring and maybe take the connector apart and clean it real good with electrical contact cleaner.
Blaze
O2 sensor heater failure
O2 sensor sensing circuit short circuited to ground or high voltage
O2 sensor sensing circuit open
ECM failure
It seems ECM failure is the last one on a lot of codes.
I would check the O2 wiring and maybe take the connector apart and clean it real good with electrical contact cleaner.
Blaze
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