Question about 2004 Mercury Sable
The computer uses this signal to help optimize engine performance and drivability. Without it, it could run rich , run lean or go into limp mode, reducing engine performance for protection.
Posted on Jan 01, 2014
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Posted on Jan 02, 2017
No it can,t. If you are geting a code that leads to your oxygen sensor, It is shot end has to be replaced. They only last so long before they have to be replaced.
Posted on Oct 20, 2012
Well ---PO 452 is still FTP Sensor Circuit Low Voltage Detected
new sensor or not
If the sensor reads less than .22volts with key on /engine off --you get a hard fault (code)
Check Sensor Connector
Sensor with no pressure or vacuum in tank is 2.4 to 2.8 volts
Key On/Eng Off On scan tool PIDS
You just need a shop with a data base & proper test procedure
or a different tech or different dealer.
I have the 2004 gas engine emissions diagnostic manual for all
2004 fords, as I have a Lincoln LS,so I don't know why a pro
Posted on Nov 25, 2012
sounds like the injectors are not getting a signal to squirt or no fuel . Have a pressure test done on the fuel manifold to check pump, pressure regulator pressure and filters.. check injector connection to ECM
Posted on Dec 24, 2013
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