P0472 Mercedes-Benz Code - Exhaust Pressure Sensor Low
Quick Answer
The Exhaust Back Pressure (EBP) sensor is a variable capacitance sensor that, when supplied with a 5-volt reference signal from the Engine Control Module (ECM), produces a linear analog voltage signal that indicates pressure. Common causes include Faulty Exhaust Back Pressure Sensor, Exhaust Back Pressure Sensor harness is open or shorted, Exhaust Back Pressure Sensor circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- P0472 Mercedes-Benz indicates Exhaust Pressure Sensor Low.
- Common causes
- Common causes include Faulty Exhaust Back Pressure Sensor, Exhaust Back Pressure Sensor harness is open or shorted, Exhaust Back Pressure Sensor circuit poor electrical connection.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Code P0472 Mercedes-Benz Description
The EBP sensor's primary function is to measure exhaust back pressure so that the ECM can control the exhaust back pressure regulator (EPR) when needed.
What are the Possible Causes of the DTC P0472 Mercedes-Benz?
- Faulty Exhaust Back Pressure Sensor
- Exhaust Back Pressure Sensor harness is open or shorted
- Exhaust Back Pressure Sensor circuit poor electrical connection
How to Fix the DTC P0472 Mercedes-Benz?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0472 Mercedes-Benz code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P0472 Mercedes-Benz code?
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Frequently Asked Questions about P0472 Mercedes-Benz Code
1. What are the common symptoms of OBDII code P0472 in a Mercedes-Benz related to the Exhaust Pressure Sensor Low?
The common symptoms include reduced engine power, poor fuel efficiency, and potential illumination of the Check Engine Light.
2. What are the possible causes of the OBDII code P0472 in a Mercedes-Benz?
The code P0472 can be caused by a faulty exhaust pressure sensor, damaged wiring or connectors, a clogged DPF (Diesel Particulate Filter), or issues with the exhaust system.
3. How can I diagnose the OBDII code P0472 in my Mercedes-Benz?
Diagnosing the code involves using an OBDII scanner to read the code, inspecting the exhaust pressure sensor and related components, and checking for any visible signs of damage or clogs.
4. Can I continue driving my Mercedes-Benz with the OBDII code P0472 present?
It is not recommended to drive your vehicle with the code P0472 present, as it can lead to further engine damage and decreased performance over time.
5. How can I repair the OBDII code P0472 in my Mercedes-Benz?
Repairing the code may involve replacing the exhaust pressure sensor, repairing any damaged wiring or connectors, cleaning or replacing the DPF, or addressing any issues in the exhaust system.
6. Is it possible to reset the OBDII code P0472 in a Mercedes-Benz without fixing the underlying issue?
While you can clear the code temporarily using an OBDII scanner, it is important to address the underlying issue to prevent further damage and ensure proper vehicle performance.
7. Are there any preventive measures to avoid the OBDII code P0472 in a Mercedes-Benz?
Regular maintenance of the exhaust system, including timely replacement of the DPF and inspection of the exhaust pressure sensor, can help prevent the occurrence of the code P0472.
8. Can a DIY enthusiast fix the OBDII code P0472 in a Mercedes-Benz?
Depending on your skill level and access to tools, some DIY enthusiasts may be able to address the code P0472 by replacing the exhaust pressure sensor or cleaning the DPF. However, complex issues may require professional assistance.
9. How much does it typically cost to repair the OBDII code P0472 in a Mercedes-Benz?
The cost of repairing the code P0472 can vary depending on the extent of the issue, the parts needed, and whether you choose to DIY or seek professional help. It is advisable to obtain quotes from mechanics for an accurate estimate.
10. Will fixing the OBDII code P0472 improve the overall performance of my Mercedes-Benz?
Yes, addressing the code P0472 and restoring the proper functioning of the exhaust pressure sensor can help improve engine performance, fuel efficiency, and overall driving experience in your Mercedes-Benz.
Discuss the causes and fixes for P0472 Mercedes-Benz OBDII Code
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Hi Guys,
Sorry to invade. I have a 2004 c220 cdi estate..
The car drove really low and as in limp mode..would not want to pick up/kick down...just steady slow drive.
Was getting the code P1400...replaced the EGR...no luck...
replaced the air mass sensor...no luck...
Now getting the codes P0472 EXHAUST PRESSURE SENSOR LOW, P0403 EXHAUST GAS RECIRCULATION CIRCUIT MALFUNCTION, P1400.
Now not sure on how to fix it now. Any help or guidance would be appreciated.
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