Ford freestar 2004 where is the O2 sensor #1 located

P0446: EVAP System Vent Control Circuit http://www.autocodes.com/p0446_ford.html

P0135: O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1
P0135 Ford O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1

P0141: O2 Heater Circuit Bank 1 Sensor 2
P0141 Ford O2 Heater Circuit Bank 1 Sensor 2

P2195: Oxygen Sensor Signal Biased/Stuck Lean - Bank 1 Sensor 1
http://www.autocodes.com/p2195_ford.html

P0403:Exhaust Gas Recirculation Control Circuit http://www.autocodes.com/p0403_ford.html

P0171: Fuel Injection System Too Lean Bank 1 http://www.autocodes.com/p0171_ford.html

It's in between the engine and fire wall. Bank one sensor one. To access it you have to remove the windshield wiper box. Remove the wiper arms, remove the upper bezel under the arms( screws to remove), pull it our. There are nuts at the top and bolts at the fire wall to remove(about 10 total). Unplug the wiper motor(on the driver side) pull it out. Then in the middle of the engine look down, you will see the O2 sensor. 21 MM special socket gets it out. Check wires for melting first, then check the plug for corrosion. Fix as necessary. Your O2 may still be good.

OK Here it is P2195 O2 Sensor Signal Stuck Lean Bank 1 Sensor 1

fix the problems
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P2195 is 02 sensor stuck lean ( bank 1 sensor 1 )--check for a possible vacuum leak in all vacuum lines.-- if no vacuum or other leaks could be egr valve. p2196 is the same but stuck rich,p0053 is ho2 sensor bank 1 sensor 1 heater resister all codes are related to the o2 sensor, p0113 is intake air tempurature curcuit high input ( IAT ). check wiring or senser replace if need be. if you can not find any leaks and egr system is ok, then its the 02 sensor causeing this.

P0132 FORD - O2 Sensor Circuit High Voltage Bank 1 Sensor 1http://engine-codes.com/p0132_ford.htmlForum CodePossible causes- Front Heated Oxygen Sensor Bank 1 harness is open or shorted
- Front Heated Oxygen Sensor Bank 1 circuit poor electrical connection
- Faulty Front Heated Oxygen Sensor Bank 1
- Inappropriate fuel pressure
- Faulty fuel injectors
- Intake air leaks may be faulty
- Exhaust gas leaks
P2195 - O2 Sensor Signal Biased/Stuck Lean Bank 1 Sensor 1

P2196 - O2 Sensor Signal Biased/Stuck Rich Bank 1 Sensor 1

p2195 is 02 sensor stuck lean ( bank 1 sensor 1 )--check for a possible vacuum leak in all vacuum lines.-- if no vacuum or other leaks could be egr valve. p2196 is the same but stuck rich,--p0053 is ho2 sensor bank 1 sensor 1 heater resister all codes are related to the o2 sensor, p0113 is intake air tempurature curcuit high input ( IAT ). check wiring or senser replace if need be. if you can not find any leaks and egr system is ok, then its the 02 sensor causeing this.

p2195
02 sensor signal stuck lean bank 1, sensor 1
p2197
o2 sensor signal stuck lean bank 2, sensor1

i beleave this will be the sensor before the catalytic converter