How to Service and Repair Oxygen Sensors on 2005 Ford Focus?

Start service and repair of Heated Oxygen Sensor (HO2S) by installing the vehicle on a hoist within NEUTRAL position and disconnecting the battery ground cable. The service process begins with separating the electrical connector from the wiring retainer on vehicles using secondary air injection and proceeding to detach the evaporative emissions (EVAP) canister purge valve heat shield and remove the four bolts fastening the exhaust manifold heat shield before setting them aside. The removal process requires lubrication of the HO2S with penetrating and lock supplier followed by use of a 22 mm crows foot wrench to detach the sensor. The electrical connector heat shield must be unsnapped on vehicles without secondary air injection to proceed with the electrical connector and wiring retainer detachment. Use penetrating and lock lubricant to lubricate the HO2S before removing it with the 22 mm crows foot wrench. The procedure requires engagement of the electrical connector locking tab while ensuring that sensor wiring uses all retainers to maintain proper routing away from hot surfaces and sharp edges. After applying anti-seize lubricant to sensor threads follow the exact opposite steps of removal to finish the installation.

OEM 2005 Ford Focus Oxygen Sensors

Oxygen O2 Sensor

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5 Oxygen Sensors found

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2005 Ford Focus Oxygen Sensor, Center Passenger Side
Part Number: 5S4Z-9G444-BA
$62.54 MSRP: $102.91
You Save: $40.37 (40%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor - Exhaust Gas - Oxygen; Oxygen Sensor, Center, Rear; Rear Oxygen Sensor
- Position: Center Passenger Side
- Replaces: 3S4Z-9G444-AA, 5S4Z-9G444-DA
- Base No.: 9G444A
- Item Weight: 0.50 Pounds
- Item Dimensions: 8.6 x 7.7 x 7.9 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 5S4Z-9G444-BA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
More Info
Fits the following 2005 Ford Focus Submodels:
- LX, S, SE, SEL, SES, ST, ZTS, ZTW, ZX3, ZX4 ST, ZX5 | 4 Cyl 2.0 L GAS, 4 Cyl 2.3 L GAS
View related parts
2005 Ford Focus Oxygen Sensor, Rear Driver Side
Part Number: GU2Z-9G444-A
$56.02 MSRP: $92.18
You Save: $36.16 (40%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Sensor - Exhaust Gas - Oxygen; Oxygen Sensor, Front, Front Left, Front Right, Rear, Rear Left, Rear Right; Rear Oxygen Sensor; Front Oxygen Sensor; Upper Oxygen Sensor; Lower Oxygen Sensor; Sensor
- Position: Rear Driver Side
- Replaces: 1R3Z-9G444-BA, 1R3Z-9G444-AA, 5F9Z-9G444-BA, 5W6Z-9G444-BA, 5C5Z-9F472-AA, DY-1091, DY-1005, DY-1063, DY-1089, DY-649, DY-1086, DY-1104, F1TZ-9F472-A, F4DZ-9F472-A, F6DZ-9G444-AA, F88Z-9F472-AA, F78Z-9F472-BA, F75Z-9G444-BA, DY-1081, DY-1060, DY-800, DY-831, DY-832, F3UZ-9F472-A, F4DZ-9F472-B, F4ZZ-9F472-C, F4UZ-9F472-A, F78Z-9F472-AA, F7RZ-9G444-BA, DY-1040, XC2Z-9F472-BA, F1SZ-9F472-A, XR3Z-9G444-BB, F5WZ-9F472-BA, 5C5Z-9F472-BA, 6E5Z-9G444-AA, 5W6Z-9G444-AA, DY-1034, DY-1093, DY-1058, F1SZ-9F472-B, 6L7Z-9F472-BA, DY-761, F5AZ-9G444-B, F4SZ-9F472-A, F77Z-9F472-BA, F6DZ-9G444-B, DY-1039, F85Z-9G444-E, F5UZ-9F472-A, F75Z-9G444-AA, F88Z-9F472-AB, F4SZ-9F472-D, F8RZ-9G444-BB, F85Z-9G444-AA, F85Z-9G444-AB, F88Z-9F472-BA, DY-1053, XR3Z-9G444-JA, XC2Z-9F472-AA, DY-1038, DY-703, F6DZ-9G444-EA, F5MZ-9F472-AA, DY-1087, FOTZ-9F472-A, DY-1057, XR3Z-9G444-EA, XR3Z-9G444-HA, DY-661, DY-731
- Item Weight: 0.40 Pounds
- Item Dimensions: 0.2 x 7.7 x 9.5 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: GU2Z-9G444-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
More Info
Fits the following 2005 Ford Focus Submodels:
- LX, S, SE, SES, Sony Limited Edition, SVT, ZTS, ZTW, ZX3, ZX4, ZX5, ZXW | 4 Cyl 2.0 L GAS, 4 Cyl 2.3 L GAS
View related parts
2005 Ford Focus Oxygen Sensor, Front
Part Number: 5S4Z-9F472-AA
$73.26 MSRP: $120.55
You Save: $47.29 (40%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor - Hego; Oxygen Sensor, Front; Front Oxygen Sensor
- Position: Front
- Replaces: 3S4Z-9F472-CA, DY-990, 3S4Z-9F472-CC, DY-1031
- Base No.: 9F472
- Item Weight: 0.60 Pounds
- Item Dimensions: 8.7 x 7.9 x 7.9 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 5S4Z-9F472-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
More Info
Fits the following 2005 Ford Focus Submodels:
- LX, S, SE, SES, ST, ZTS, ZTW, ZX3, ZX4, ZX4 ST, ZX5, ZXW | 4 Cyl 2.0 L GAS, 4 Cyl 2.3 L GAS
View related parts
2005 Ford Focus Oxygen Sensor
Part Number: XS2Z-9G444-AA
Product Specifications
- Other Name: Sensor Assembly; Rear Oxygen Sensor
- Base No.: 9G444
- Item Weight: 0.40 Pounds
- Item Dimensions: 8.7 x 7.7 x 7.7 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: XS2Z-9G444-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
More Info
Fits the following 2005 Ford Focus Submodels:
- LX, S, SE, SES, Sony Limited Edition, SVT, ZTS, ZTW, ZX3, ZX4, ZX5, ZXW | 4 Cyl 2.0 L GAS, 4 Cyl 2.3 L GAS
View related parts
2005 Ford Focus Rear Oxygen Sensor, Driver Side
Part Number: 5S4Z-9G444-CA
Product Specifications
- Other Name: Sensor - Exhaust Gas - Oxygen; Oxygen Sensor, Rear; Oxygen Sensor
- Position: Rear Driver Side
- Replaces: 5S4Z-9G444-AA
- Base No.: 9G444B
- Item Weight: 0.60 Pounds
- Item Dimensions: 8.3 x 7.6 x 7.7 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 5S4Z-9G444-CA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
More Info
Fits the following 2005 Ford Focus Submodels:
- ST, ZX4 ST | 4 Cyl 2.3 L GAS

2005 Ford Focus Oxygen Sensors

If you're seeking quality and affordability, look no further than our extensive inventory of genuine 2005 Ford Focus Oxygen Sensors available at FordPartsDeal.com. You can confidently purchase our OEM 2005 Ford Focus Oxygen Sensors as they are supported by the manufacturer's warranty and our hassle-free return policy, alongside the benefit of our fast delivery service.

2005 Ford Focus Oxygen Sensors Parts Questions & Experts Answers

Q: How to Service and Repair Oxygen Sensors on 2005 Ford Focus?
A: Start service and repair of Heated Oxygen Sensor (HO2S) by installing the vehicle on a hoist within NEUTRAL position and disconnecting the battery ground cable. The service process begins with separating the electrical connector from the wiring retainer on vehicles using secondary air injection and proceeding to detach the evaporative emissions (EVAP) canister purge valve heat shield and remove the four bolts fastening the exhaust manifold heat shield before setting them aside. The removal process requires lubrication of the HO2S with penetrating and lock supplier followed by use of a 22 mm crows foot wrench to detach the sensor. The electrical connector heat shield must be unsnapped on vehicles without secondary air injection to proceed with the electrical connector and wiring retainer detachment. Use penetrating and lock lubricant to lubricate the HO2S before removing it with the 22 mm crows foot wrench. The procedure requires engagement of the electrical connector locking tab while ensuring that sensor wiring uses all retainers to maintain proper routing away from hot surfaces and sharp edges. After applying anti-seize lubricant to sensor threads follow the exact opposite steps of removal to finish the installation.