I need the location of a rear oxygen sensor on a 2002 windstar

02 sensors are in the exhaust pipe.

Most are located on or near the exhaust manifold.

The oxygen sensors are located under the vehicle on the exaust manafold unless you are getting a certain code wich u should be getting if they are malfuctioning then it could be something else.have you change the fuel filter? It also might need a tune up new plugs wires air filter ext

Hi there:

This fault code refer at Oxygen O2 Sensor Circuit Low Voltage (Bank 2, Sensor 2), and basically means the PCM detected either an excessive current draw, or an open or short in the circuit powering the oxygen sensor's heater circuit. This is in reference to the Heated Oxygen Sensor (2) located rear of catalytic converter (Bank 2).

A code P0161 may mean that one or more of the following has happened:

• HO2S heater power circuit open
• HO2S heater ground circuit open
• HO2S signal tracking (due to oil or moisture in the connector)
• HO2S is damaged or has failed PCM has failed

Possble soutions:

• Replace HO2 Sensor
• Repair open or short in power circuit
• Repair open or short in ground circuit
• Repair damaged connector due to tracking

Use this Ford diagram about O2 sensor location...




O2 Sensor 2 Bank 2 = HO2S 2/2 (zoom image link)

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

bank one is always the same side of the engine as the number one cylinder. Bank two is the opposite side.

the number one cylinder is on the back side of the engine closest to the firewall. the upstream (sensor 1) O2 sensor will be in the exhaust manifold. The downstream (sensor 2) will be in the exhaust pipe after the catalytic converter.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Common Problems That Trigger the P0147 Code

• Defective Rear Most Oxygen Sensor
• Faulty Rear Most Oxygen Sensor wiring or connections
• Exhaust leak in front of rear oxygen sensor

The Windstar has four sensors in the exhaust system. Each side (bank) has two sensors. The first sensor after the exhaust manifold is the oxygen sensor and monitors how that bank is running, sending information to the computer. The second sensor is a catalytic converter monitor sensor. It monitors the job the cat is doing, sending info to the processor as well. The connectors are blue or gray (factory) and are located on the engine side of the exhaust. The front sensors are a little more difficult to get to then the rears.

There is also a sensor called a DPFE that measures back pressure from the exhaust and is used to properly operate the EGR system. It is located on the left side of the engine torward the rear of engine (front of car). Good luck.

Fig. Component Location Chart-2000 MPV

1 PCM 2 Mass air flow (MAF)/intake air temperature (IAT) sensor 3 Throttle position (TP) sensor 4 Fuel tank pressure sensor 5 Engine coolant temperature (ECT) sensor 6 Crankshaft position (CKP) sensor 7 Camshaft position (CMP) sensor 8 Knock sensor 9 Heated oxygen sensor (HO2S) (front, LH) 10 Heated oxygen sensor (HO2S) (front, RH) 11 Heated oxygen sensor (HO2S) (rear, LH) 12 Heated oxygen sensor (HO2S) (rear, RH) 13 EGR boost sensor 14 Power steering pressure (PSP) switch 15 Main relay


Fig. Component Location Chart-2001 MPV

1 PCM 2 Mass air flow (MAF)/Intake air temperature (IAT) sensor 3 Throttle position (TP) sensor 4 Engine coolant temperature (ECT) sensor 5 Crankshaft position (CKP) sensor 6 Camshaft position (CMP) sensor 7 Knock sensor 8 Heated oxygen sensor (HO2S) (front, LH) 9 Heated oxygen sensor (HO2S) (front, RH) 10 Heated oxygen sensor (HO2S) (rear, LH)* 11 Heated oxygen sensor (HO2S) (rear, RH)* 12 EGR boost sensor


Fig. Component Location Chart- 2002-06 MPV

On the SOHC engine the front (A/F) oxygen sensor is located in the front section of the front catalytic converter. The rear oxygen sensor is located in the rear section of the front catalytic converter. On the DOHC engine the front oxygen sensor is located in the front section of the exhaust system, just past the crossover pipe. The rear oxygen sensor is located in the front section of the catalytic converter.

Oxygen sensor location-Baja 2.5L SOHC engine


Oxygen sensor location-Baja 2.5L DOHC engine



On the 2.0L engine the front (A/F) oxygen sensor is located in the front section of the exhaust system, just past the crossover pipe. The rear oxygen sensor is located in the front section of the rear catalytic converter. On the 2.2L engine the front (A/F) oxygen sensor is located in the front section of the front catalytic converter. The rear oxygen sensor is located in the rear section of the rear catalytic converter.

Oxygen sensor location-Impreza 1998-2001 2.2L engine



Oxygen sensor location-Impreza 1998-2002 2.5L SOHC engine

I hope helped with this; remember rated this help. Good luck.

you have 3, 2 upstream and one downstream. They have wire harnesses attached to them and they screw into the exhaust system. Ususally two in the exgaust crossover pipe, the other just behind the catalytic converter.