Question about 2002 Mercury Villager

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Wiring i need the wiring schematics for my 02 oxygen sensor

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  • Mercury Master
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2002 PCED OBDII-Villager SECTION 1: Description and Operation Catalyst and Exhaust System Overview The catalytic converter and exhaust system work together to control the release of harmful engine exhaust emissions into the atmosphere. The engine exhaust gas consists mainly of nitrogen, carbon dioxide and water vapor. However, it also contains carbon monoxide, oxides of nitrogen, hydrogen, and various unburned hydrocarbons. Carbon monoxide, oxides of nitrogen, and hydrocarbons are major air pollutants, and emission into the atmosphere must be controlled.
The exhaust system consists of an exhaust manifold combined with a pre-catalytic converter, upstream heated oxygen sensor (HO2S11), (located just in front of the pre-catalytic converter), three way catalytic converter (TWC), downstream heated oxygen sensor (HO2S12) (located in front of the TWC), a muffler and an exhaust tailpipe.
Heated Oxygen Sensors The Villager is equipped with both upstream and downstream heated oxygen sensors (HO2S) (Figure 1). The upstream heated oxygen sensor (HO2S11) is used to control engine fuel flow. The sensor detects the concentration of oxygen in the exhaust gas and sends a signal to the powertrain control module (PCM). In a rich condition, the HO2S will output a voltage of 0.6 volts or greater, and in a lean condition a voltage of 0.4 volts or less will be output.
The downstream heated oxygen sensor (HO2S12) is used primarily for monitoring the efficiency of the catalytic converter system. The HO2S12 works in a similar way to the HO2S11 but only indicates to the PCM that the catalyst is functioning properly. In the event that the HO2S11 fails, fuel control will be switched over to the HO2S12 and the malfunction indicator lamp (MIL) will be illuminated. This allows the vehicle to operate with fewer emissions, even with a sensor failure.
Figure 1: Typical Heated Oxygen Sensor (HO2S)

Posted on Mar 07, 2009

  • gerry bissi Mar 07, 2009

    i tried to load the wiring diagram but it is PDF file, not supported here. Need email addres to send to.



    you have 2 O2 sensors.

    front sensor

    black wire goes to pin 99 in PCM

    lt grn oes to pin 48

    blue/yellow stripe goes from fuse box (fuse 43 7.5 amp) to the front sensor



    rear sensor

    blue/yellow to sensor

    yellow to pin 102 of PCM

    white to pin 54 of PCM





    Both have ground wire goint to G#108 Top f Engine

    so rear is 4 wire front is 3 wire



    Please rate as fixya if this helps. thanks

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6 Suggested Answers

justuscc
  • 360 Answers

SOURCE: oxygen sensors

you have four on this truck. bank one sensor one is "black and white" b1 s2 "brown" b2s1 "light green" b2 s2 "red/white" good luck post as fixed thanks

Posted on Sep 20, 2008

daves944
  • 1050 Answers

SOURCE: Where is Bank 1 Sensor 1 on an 2003 Oldsmobile Sillohuette?

"Bank one" is the bank of cylinders that starts with the #1 cylinder. In this case this will be the bank of three cylinders that is closest to the firewall. Sensor #1 refers to the O2 sensor that is between the engine and the catalytic converter. So the Bank 1, sensor 1, will be the O2 sensor that is mounted in the rear exhaust manifold or tubing just before the cat.

Posted on May 16, 2009

wracefans24
  • 1985 Answers

SOURCE: Having trouble with wiring of oxygen sensor

there should be a paper inside the parts box that tells you how to rewire the after market sensor

Posted on Jan 21, 2010

  • 88 Answers

SOURCE: Bank 1 Sensor 1 - Oxygen sensor needs to be

The sensor you indicate would be on the manifold of the head containing cyl.# 1, top sensor (prior to catalytic conv.) 6 cyl. engine. 4 cylinder would be sensor on exhaust manifold. Confirm sensor failure prior to replacing as chrysler harness connectors are known for pin failures at 02 sensor connections. Inspect for burnt pins and cracked/chaffed wires first before changing sensor.

Posted on Jan 30, 2010

  • 84 Answers

SOURCE: location of downstream oxygen sensors

The downstream o2 sensor is located behind the catalytic converter.

Posted on Feb 03, 2010

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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1 Answer

Po136-o137 says change 02 sensor on bank 1 sensor2 I did but engine light is still on 2004 chevy tahoe


code p 0136 refers to heated oxygen sensor (HO2S) 2 bank 1 ---circuit malfunction===causes ---heating inoperative ---wiring---HO2S--- ECM
also refers to oxygen sensor (O2S0 2 bank 1---circuit malfunction===causes --- wiring---O2S ---ecm
it also refers to heated oxygen sensor (HO2S) 2 bank 1 ---no signal===causes ---wiring --- HO2S---
code p 0137 refers to HO2S 2 bank 1 ---low voltage -===causes --exhaust leak---wiring short to ground ---HO2S--- ECM
it also refers to O2S 2 bank 1---low voltage ===causes exhaust leak---wiring short to ground ---O2S ---ECM
to set you up here-- there are 4 oxygen sensors in the system
2 are heated oxygen sensors (HO2S) on in each exhaust manifold or exhaust pipe before the cat converter and
2 oxygen sensors (O2S) -- one in each exhaust pipe after the cat converters
heated oxygen sensors have 4 wires and O2S sensors normally only 2 wires
it is more that possible that you changed the wrong sensors and in the process damaged the delicate wires with the incorrect spanner being used

Jul 25, 2016 | 2004 Chevrolet Tahoe

1 Answer

How many 02 sensor and how many wire each sensor


depending on the engine make
v8 and v6 have 2 oxygen sensors( O2S) , one after each cat converter with 2 wires and 2 heated oxygen sensors ( HO2S) in the exhaust manifold/ pipe before the cat converter with 4 wires each
6 cyl and 4 cyl engines have one oxygen sensor after that cat converter and one heated oxygen sensor before the cat converter

Mar 24, 2016 | Cars & Trucks

1 Answer

How can you tell if oxygen sensor is bad


Hello there and welcome to fixya
Remove the oxygen sensor connector cover and check the oxygen sensor's operational voltage. Consult your vehicle's manual to find the wiring schematic. Back probe the sensor's connector with the meter leads. Start engine again and monitor voltage readings. Voltage should switch between high and low, from approximately 0.1 to 0.9 vdc. Replace sensor if it fails this test.
3

Unplug the sensor connector and test the sensor's heating circuit. Using your vehicle's wiring schematic, check for 12 vdc and also for a good ground. If voltage or a ground is not present, repair circuit between connector and battery.
4

Measure internal resistance of the sensor's heater circuit. Check that the heater resistance is a low reading. Replace sensor if the heater resistance is infinity or extremely high.
5

Unplugging the sensor's connector while testing the oxygen sensor will often set fault codes and illuminate the "Check Engine" light. After all checks and repairs have been made, clear the fault codes by following the procedure in your vehicle's

Read more: How to Test Oxygen Sensors ' eHow.com http://www.ehow.com/how_4780847_test-oxygen-sensors.html#ixzz1hPBA4wKH

Dec 23, 2011 | Cars & Trucks

1 Answer

I have a1996 ford explore with this codes p0133:02,po155:02,p1115andpo0306


DTC P0133 - Oxygen Sensor Circuit Slow Response (Bank1, Sensor1)
This involves the front oxygen sensor on Bank 1. This code indicates the engine air fuel ratio is not being adjusted by the oxygen sensor signal or the ECM as expected to do so, or not adjusted as often as expected to do so once the engine is warmed or under normal engine use. You will likely not notice any drivability problems, although there may be symptoms.

A code P0133 may mean that one or more of the following has happened:
The oxygen sensor is faulty
The wiring to the sensor is broken / frayed
There is an exhaust leak


DTC P0155 - 02 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)
This code refers to the front oxygen sensor on Bank 2. The heated circuit in the oxygen sensor decreases time needed to enter closed loop. As the O2 heater reaches operating temperature, the oxygen sensor responds by switching according to oxygen content of the exhaust surrounding it. The ECM tracks how long it takes for the oxygen sensor to begin switching. It the ECM determines (based on coolant temp) that too much time elapsed before the oxygen sensor began operating properly, it will set P0155. See also: P0135 (Bank 1). You will likely notice poor fuel economy the illumination of the MIL.

A code P0155 may mean that one or more of the following has happened:
O2 Heater element resistance is high
Internal short or open in the heater element
O2 heater circuit wiring high resistance
open or short to ground in the wiring harness


DTC P0306 - Cylinder #6 Misfire Detected
A P0306 code means that the the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #6. Symptoms may include the engine may be harder to start, the engine may stumble / stumble, and/or hesitate or other symptoms may also be present.

A code P0306 may mean that one or more of the following has happened:
Faulty spark plug or wire
Faulty coil (pack)
Faulty oxygen sensor(s)
Faulty fuel injector
Burned exhaust valve
Faulty catalytic converter(s)
Running out of fuel
Poor compression
Defective computer


DTC P1115 - Intake Air Temperature 2 Circuit High Input (Super/Turbo Charged engines)


In the next diagram could checl this specific location about each O2 sensor...

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Hope this helps.

Oct 05, 2011 | 1996 Ford Explorer

1 Answer

Engine light came on - yellow. Code: P0134 02


there is either a problem with the wiring going to the front oxygen sensor, or with the oxygen sensor itself. good luck!

Mar 31, 2010 | 2003 Honda CR-V

1 Answer

Oxygen sensor


you need to borrow the oxygen sensor wrench from autozone or whereever you bought the sensor. Section 03-14: Engine Controls, Electronic 1996 Taurus, Sable Workshop Manual REMOVAL AND INSTALLATION -------------------------------------------------------------------------------- Heated Oxygen Sensor (HO2S) SPECIAL SERVICE TOOL(S) REQUIRED Description Tool Number Oxygen Sensor Wrench T94P-9472-A Removal and Installation Disconnect battery ground cable (14301). Refer to Section 14-01 . On 3.0L (4V) engine remove cowl extension and right side of leaf screen. Disconnect engine control sensor wiring (12A581) from heated oxygen sensors (HO2S) (9F472). Do not remove harness connectors from the brackets. Raise vehicle on hoist. Refer to Section 00-02 . NOTE: If excessive force is needed to remove a heated oxygen sensor, lubricate the heated oxygen sensor with penetrating oil prior to removal. Remove heated oxygen sensors from exhaust manifolds (9430) using Oxygen Sensor Wrench T94P-9472-A. To install, reverse Removal procedure. Apply a coating of anti-sieze compound to threads of heated oxygen sensor. Tighten heated oxygen sensors to 34-46 Nm (26-34 lb-ft).

Jun 13, 2009 | 1996 Ford Taurus

1 Answer

How do you replace the oxygen sensors on a 1995 merc sable with a 3.0 ltr motor


they just unscrew from the exhaust pipe.

Heated Oxygen Sensor (HO2S) SPECIAL SERVICE TOOL(S) REQUIRED Description Tool Number Oxygen Sensor Wrench T94P-9472-A
Removal and Installation
  1. Disconnect battery ground cable (14301). Refer to Section 14-01 .
  1. On 3.0L (4V) engine remove cowl extension and right side of leaf screen.
  1. Disconnect engine control sensor wiring (12A581) from heated oxygen sensors (HO2S) (9F472). Do not remove harness connectors from the brackets.
  1. Raise vehicle on hoist. Refer to Section 00-02 .
  1. NOTE: If excessive force is needed to remove a heated oxygen sensor, lubricate the heated oxygen sensor with penetrating oil prior to removal.

    Remove heated oxygen sensors from exhaust manifolds (9430) using Oxygen Sensor Wrench T94P-9472-A.
  1. To install, reverse Removal procedure. Apply a coating of anti-sieze compound to threads of heated oxygen sensor. Tighten heated oxygen sensors to 34-46 Nm (26-34 lb-ft).


    Heated Oxygen Sensors—3.0L (4V) Engine


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May 02, 2009 | 1995 Mercury Sable

1 Answer

Where's my O2 sensor located


Heated Oxygen Sensor (HO2S) SPECIAL SERVICE TOOL(S) REQUIRED Description Tool Number Oxygen Sensor Wrench T94L-9472-A
Removal and Installation
NOTE: If excessive force is needed to remove heated oxygen sensor (HO2S) (9F472) , lubricate heated oxygen sensor with penetrating oil prior to removal.
  1. Disconnect battery ground cable (14301) .
  1. Disconnect heated oxygen sensors from engine control sensor wiring (12A581) .
  1. Raise vehicle on hoist. Refer to Section 00-02 .
  1. Remove heated oxygen sensors from dual converter Y pipe (5F250) using Oxygen Sensor Wrench T94L-9472-A.
  1. To install, reverse Removal procedure. Tighten heated oxygen sensors to 36-46 Nm (26-34 lb-ft).

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Feb 22, 2009 | 1994 Ford Thunderbird

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