P0471 Audi Code - Exhaust Pressure Sensor Range/Performance
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
- P0471 Audi indicates Exhaust Pressure Sensor Range/Performance.
- 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 P0471 Audi 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 P0471 Audi?
- 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 P0471 Audi?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0471 Audi 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.
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Frequently Asked Questions about P0471 Audi Code
1. What are the common symptoms of OBDII code P0471 in an Audi related to the Exhaust Pressure Sensor?
- Common symptoms include reduced engine power, poor fuel efficiency, and the illumination of the Check Engine light.
2. What are the typical causes of OBDII code P0471 in an Audi?
- The code P0471 in an Audi is usually caused by a faulty exhaust pressure sensor, damaged wiring or connectors, or issues with the exhaust system.
3. How can I diagnose the OBDII code P0471 in my Audi?
- Diagnosis involves using an OBDII scanner to retrieve the code, inspecting the exhaust pressure sensor and related components for damage, and testing the sensor's functionality.
4. Can driving with OBDII code P0471 in my Audi cause further damage?
- Continuing to drive with code P0471 may lead to decreased engine performance and fuel efficiency, and could potentially cause damage to the engine or exhaust system if left unresolved.
5. What are some repair tips for fixing OBDII code P0471 in an Audi?
- Repair tips include checking and replacing the exhaust pressure sensor, repairing any damaged wiring or connectors, and ensuring proper installation and calibration of the new sensor.
6. How much does it typically cost to repair OBDII code P0471 in an Audi?
- The cost of repair can vary depending on the extent of the issue and whether professional assistance is required, but it may range from $100 to $300 for parts and labor.
7. Can I reset OBDII code P0471 in my Audi using an OBDII scanner?
- Yes, you can reset the code using an OBDII scanner, but it is important to address the underlying issue causing the code to prevent it from reoccurring.
8. Is it safe to drive my Audi with the Check Engine light on due to code P0471?
- While it may be safe to drive in the short term, it is recommended to address the issue promptly to prevent potential damage to the engine or exhaust system.
9. Are there any preventative maintenance tips to avoid OBDII code P0471 in an Audi?
- Regularly inspecting and maintaining the exhaust system, including the exhaust pressure sensor, can help prevent issues that may trigger code P0471 in an Audi.
10. How long does it typically take to repair OBDII code P0471 in an Audi?
- The repair time can vary depending on the exact cause of the code and the availability of parts, but it may take anywhere from 1 to 3 hours for a professional mechanic to diagnose and fix the issue.
Discuss the causes and fixes for P0471 Audi OBDII Code
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If you have a 3.0 TDI A4 B7 then the sensor is located on top of the transmission underneath the car. It is not in the engine bay.
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If you have a 3.0TDI A4 B7 then the sensor is located underneath the car on top of the transmission. It is not located in the engine bay.
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