The 4.6L Ford F150 and F250 Pickup come equipped with 4 cook oxygen sensors (HO2S). This short article contains the wiring diagrams of all 4 oxygen sensors.

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RF Oxygen Sensor (O2S11) Wiring Diagram

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RF Oxygen Sensor Troubleshooting Notes:

The appropriate front oxygen sensor is situated on financial institution 1 and also before the catalytic converter.Bank 1 is the financial institution of cylinders that dwellings cylinders #1, #2, #3, and also #4.Bank 1 is located on the passenger next of the engine compartment. The right front oxygen sensor is also known as:HO2S11 (Heated Oxygen Sensor bank 1 Sensor 1).Bank 1 upstream oxygen sensor.Right upstream O2 sensor.

LF Oxygen Sensor (O2S21) Wiring Diagram

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LF Oxygen Sensor Troubleshooting Notes:

The left front oxygen sensor is located on financial institution 2 and before the catalytic converter.Bank 2 is the bank of cylinders that houses cylinders #5, #6, #7, and also #8.Bank 2 is situated on the driver next of the engine compartment. The left prior oxygen sensor is also known as:HO2S21 (Heated Oxygen Sensor financial institution 2 Sensor 1).Bank 2 upstream oxygen sensor.Left upstream O2 sensor.

RR Oxygen Sensor (O2S12) Wiring Diagram

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RR Oxygen Sensor Troubleshooting Notes:

The appropriate rear oxygen sensor is located on bank 1 and also AFTER the catalytic converter.Bank 1 is the bank of cylinders that residences cylinders #1, #2, #3, and also #4.Bank 1 is situated on the passenger next of the engine compartment. The best rear oxygen sensor is likewise known as:HO2S12 (Heated Oxygen Sensor bank 1 Sensor 2).Bank 1 downstream oxygen sensor.Right downstream O2 sensor.

LR Oxygen Sensor (O2S22) Wiring Diagram

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LR Oxygen Sensor Troubleshooting Notes:

The left behind oxygen sensor is situated on financial institution 2 and AFTER the catalytic converter.Bank 2 is the financial institution of cylinders that homes cylinders #5, #6, #7, and #8.Bank 2 is situated on the driver side of the engine compartment. The left behind oxygen sensor is also known as:HO2S22 (Heated Oxygen Sensor bank 2 Sensor 2).Bank 2 downstream oxygen sensor.Left downstream O2 sensor.

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Where to Buy The Oxygen Sensor and Save

The best place to comparison shop and get an idea of how much her Ford pickup"s oxygen (O2) sensor cost (and how much you can save) is here:


Not certain if the over oxygen (O2) sensor fits your specific Ford pickup? Don"t worry, when you obtain to the site, they"ll make certain it fits by questioning you the particulars of your vehicle. If the doesn"t fit, they"ll discover you the best one.

More Ford 4.6L, 5.4L Diagnostic Tutorials

If you delighted in and/or uncovered this ‘How To’ short article helpful, I have actually written several much more Ford 4.6L, 5.4L certain test articles. Friend can discover them every in this index: Ford 4.6L, 5.4L index Of Articles