Lambda Sensor - Bosch - 0258030007
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Product Information
Full details
This Bosch Lambda Sensor (0258030007) is for MERCEDES-BENZ A-CLASS (W176) owners with petrol engines needing post-catalytic converter exhaust monitoring. Its key benefit is ensuring optimal engine performance and emissions control by accurately measuring oxygen levels. A caveat is its specific fitment, requiring careful verification before purchase. This 4-wire sensor, measuring 330 mm in length, is a reliable replacement part designed for direct fitment.
All features
| Model Part Number | 0258030007 |
|---|---|
| Brand | Bosch |
Extended Product Information
FAQs
What is a Lambda Sensor (Oxygen Sensor)?
A Lambda Sensor, also known as an Oxygen Sensor, measures the amount of oxygen in your vehicle's exhaust gases. This information is used by the engine control unit (ECU) to optimize the air-fuel ratio for efficient combustion and reduced emissions.
Where is this sensor located?
This specific Bosch Lambda Sensor (0258030007) is designed for placement *after* the catalytic converter in the exhaust system.
How do I know if my Lambda Sensor needs replacing?
Common signs include a check engine light, reduced fuel economy, rough idling, or failed emissions tests. A diagnostic scan will usually reveal specific fault codes related to the oxygen sensor.
Is this sensor compatible with my car?
This sensor is compatible with MERCEDES-BENZ A-CLASS (W176) A 160 (176.041) Hatchback models with Petrol engines produced from July 2015 to May 2018, particularly those with the M270.910 engine code. Always verify with your vehicle's VIN or consult a professional.
What does the 4-wire circuit mean?
A 4-wire sensor typically includes heated oxygen sensor (HO2S) functionality, which helps the sensor reach its optimal operating temperature faster, leading to more accurate readings sooner after engine start.
Can I install this myself?
While possible, it is recommended to have a qualified mechanic install the sensor. Proper torque, sealing, and connection are critical for performance and longevity, and incorrect installation can damage the sensor or exhaust system.
What is the length of the sensor?
The overall length of this Bosch Lambda Sensor is 330 mm.
Troubleshooting
Check Engine Light remains on after replacement
Ensure the sensor is correctly seated and the electrical connector is fully plugged in. Clear the diagnostic trouble codes (DTCs) with an OBD-II scanner and drive the vehicle to allow the ECU to relearn. If the light persists, re-verify vehicle compatibility or consider other potential exhaust or engine issues.
Poor engine performance or rough idling
Confirm the sensor was installed in the correct location (post-catalytic converter). Check for any exhaust leaks near the sensor fitting. Ensure the correct part number was ordered and is compatible with your specific vehicle model and year.
Emissions test failure
Verify that the new sensor is functioning correctly by checking live data with an OBD-II scanner. Ensure the catalytic converter itself is functioning within specifications. A faulty catalytic converter can mimic oxygen sensor issues.
Pros and Cons
Pros
- Ensures accurate exhaust gas analysis for optimal engine performance.
- Helps maintain emissions compliance.
- Direct fit replacement for compatible MERCEDES-BENZ models.
- Bosch quality provides reliability and durability.
Cons
- Specific fitment limits vehicle compatibility.
- Requires professional installation to ensure proper function.
- Damage can occur if installed incorrectly.
Setup, Compatibility & Care
Compatibility Check: Before installation, verify that your MERCEDES-BENZ A-CLASS (W176) A 160 (176.041) Hatchback was manufactured between July 2015 and May 2018 and is equipped with a petrol engine, specifically the M270.910 engine code. Cross-reference the part number 0258030007 with your vehicle's existing sensor or consult a qualified mechanic.
Installation: This sensor is designed for placement after the catalytic converter in the exhaust system. Installation requires removing the old sensor and screwing in the new one. Ensure the electrical connector is securely fastened. It is highly recommended that installation be performed by a qualified technician to avoid damage to the sensor or exhaust system, and to ensure proper torque and sealing.
Care: Lambda sensors are sensitive components. Avoid exposing the sensor tip to harsh chemicals, excessive heat, or physical impact. Regular vehicle maintenance, including checking for exhaust leaks, will help prolong the life of the sensor.