What is the function and operation of an oxygen sensor on 2005 Mercedes-Benz C240?

An oxygen sensor is a galvanic battery which produces a voltage in uncombusted oxygen in exhaust. Upstream sensors modulate pulse width of fuel injectors in order to have an optimum combustion whereas downstream sensors gauge the efficiency of catalysts. There must be proper connections, temperatures and unleaded fuel. The process of replacement includes heating the engine, disconnection, unscrewing and installation of the sensor.

Genuine 2005 Mercedes-Benz C240 Oxygen Sensor

Oxygen O2 Sensor

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3 Oxygen Sensors found

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2005 Mercedes-Benz C240 Rear Oxygen Sensor
Part Number: 001-540-74-17
$292.80 MSRP: $408.00
You Save: $115.20 (29%)
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Product Specifications
- Other Name: Sender Unit; Rear Oxygen Sensor
- Replaces: 001-540-07-17
- Item Weight: 0.70 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 001-540-74-17
- Warranty: This genuine part is guaranteed by Mercedes-Benz's factory warranty.
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Fits the following 2005 Mercedes-Benz C240 Submodels:
- 4Matic, Base | 6 Cyl 2.6 L GAS
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2005 Mercedes-Benz C240 Oxygen Sensor
Part Number: 001-540-46-17
$292.80 MSRP: $408.00
You Save: $115.20 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sender Unit; Oxygen Sensor
- Replaces: 001-540-46-17-28
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 001-540-46-17
- Warranty: This genuine part is guaranteed by Mercedes-Benz's factory warranty.
Fits the following 2005 Mercedes-Benz C240 Submodels:
- 4Matic, Base | 6 Cyl 2.6 L GAS
View related parts
2005 Mercedes-Benz C240 Oxygen Sensor
Part Number: 001-540-50-17
$291.60 MSRP: $406.00
You Save: $114.40 (29%)
ADD TO CART
Product Specifications
- Other Name: Sender Unit; Sensor
- Replaced by: 001-540-92-17-26
- Replaces: 001-540-50-17-28
- Item Weight: 0.70 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 001-540-50-17
- Warranty: This genuine part is guaranteed by Mercedes-Benz's factory warranty.
More Info
Fits the following 2005 Mercedes-Benz C240 Submodels:
- 4Matic, Base | 6 Cyl 2.6 L GAS

2005 Mercedes-Benz C240 Oxygen Sensor Parts Q&A

Q: What is the function and operation of an oxygen sensor on 2005 Mercedes-Benz C240?
A: An oxygen sensor is a galvanic battery which produces a voltage in uncombusted oxygen in exhaust. Upstream sensors modulate pulse width of fuel injectors in order to have an optimum combustion whereas downstream sensors gauge the efficiency of catalysts. There must be proper connections, temperatures and unleaded fuel. The process of replacement includes heating the engine, disconnection, unscrewing and installation of the sensor.