P0473 Volkswagen Code - Exhaust Pressure Sensor High
Quick Answer
The P0473 code for Volkswagen vehicles indicates a problem with the Exhaust Pressure Sensor, specifically that it is reading a high voltage signal. Common causes include Faulty Sensor: The Exhaust Pressure Sensor itself may be faulty and need to be replaced, Wiring Issues: Damage or corrosion to the wiring connected to the sensor can cause high voltage readings, Exhaust System Blockage: A blockage in the exhaust system can cause pressure to build up, leading to high voltage readings from the sensor. 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
- P0473 Volkswagen indicates Exhaust Pressure Sensor High.
- Common causes
- Common causes include Faulty Sensor: The Exhaust Pressure Sensor itself may be faulty and need to be replaced, Wiring Issues: Damage or corrosion to the wiring connected to the sensor can cause high voltage readings, Exhaust System Blockage: A blockage in the exhaust system can cause pressure to build up, leading to high voltage readings from the sensor.
- 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.
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Code P0473 Volkswagen Description
The P0473 code for Volkswagen vehicles indicates a problem with the Exhaust Pressure Sensor, specifically that it is reading a high voltage signal. The Exhaust Pressure Sensor is a crucial component in the vehicle's emissions control system, as it measures the pressure in the exhaust system to ensure optimal performance and efficiency. When the sensor detects a high voltage signal, it could indicate issues with the sensor itself, wiring, or the exhaust system.
Common Causes of P0473 Volkswagen
- Faulty Sensor: The Exhaust Pressure Sensor itself may be faulty and need to be replaced.
- Wiring Issues: Damage or corrosion to the wiring connected to the sensor can cause high voltage readings.
- Exhaust System Blockage: A blockage in the exhaust system can cause pressure to build up, leading to high voltage readings from the sensor.
- Exhaust Gas Recirculation (EGR) System Malfunction: Issues with the EGR system can also cause the sensor to read high voltage signals.
Symptoms of P0473 Volkswagen
- Check Engine Light: The most common symptom associated with the P0473 code is the illumination of the Check Engine Light on the dashboard.
- Reduced Fuel Efficiency: A malfunctioning Exhaust Pressure Sensor can lead to a decrease in fuel efficiency, as the engine may not be receiving accurate pressure readings.
- Engine Misfires: In some cases, the high voltage signal from the sensor can cause the engine to misfire or run rough.
- Lack of Power: The vehicle may experience a loss of power or acceleration due to incorrect pressure readings being sent to the engine control module.
How to Fix P0473 Volkswagen
- Diagnostic Testing: Begin by using a diagnostic scanner to retrieve the specific fault code and confirm the issue with the Exhaust Pressure Sensor.
- Inspection: Inspect the sensor and wiring for any visible damage or corrosion. Replace any damaged components.
- Clearing Codes: Clear the fault codes from the engine control module and test drive the vehicle to see if the issue persists.
- Sensor Replacement: If the sensor is found to be faulty, replace it with a new one following manufacturer guidelines.
- Exhaust System Inspection: Inspect the exhaust system for any blockages or leaks that may be causing the high pressure readings.
Cost to Fix P0473 Volkswagen
The typical cost to repair a high Exhaust Pressure Sensor in a Volkswagen vehicle can range from $150 to $400, including parts and labor. However, it's important to note that the final cost may vary depending on the specific model of the vehicle, the location of the repair shop, and the extent of the damage. Diagnostic time and labor rates can also impact the overall cost, so it's recommended to get a detailed estimate from a qualified mechanic.
Tech Notes for P0473 Volkswagen
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Frequently Asked Questions about P0473 Volkswagen Code
1. What are the common symptoms of OBDII code P0473 in a Volkswagen related to the Exhaust Pressure Sensor High?
- Common symptoms include reduced engine power, increased fuel consumption, rough idling, and the illumination of the check engine light.
2. What are the typical causes of OBDII code P0473 (Exhaust Pressure Sensor High) in a Volkswagen?
- The main causes of this code in a Volkswagen are a faulty exhaust pressure sensor, damaged wiring or connectors, or issues with the exhaust system itself.
3. How can I diagnose the OBDII code P0473 in my Volkswagen?
- Diagnosis involves using an OBDII scanner to retrieve the specific code, inspecting the exhaust pressure sensor and related components for damage, and testing the sensor's functionality.
4. Can I continue driving my Volkswagen with OBDII code P0473 (Exhaust Pressure Sensor High)?
- It is not recommended to drive your vehicle with this code as it can lead to further damage and potential safety issues. It's best to address the problem promptly.
5. What repairs are typically needed to fix OBDII code P0473 in a Volkswagen?
- Repairs may involve replacing the exhaust pressure sensor, repairing or replacing damaged wiring or connectors, or addressing any issues within the exhaust system causing the high pressure reading.
6. Is it possible to reset the OBDII code P0473 in a Volkswagen without repairing the issue?
- While you can clear the code with an OBDII scanner, it is not a permanent solution. The underlying issue causing the high exhaust pressure reading needs to be addressed for the code not to return.
7. Are there any preventive measures to avoid OBDII code P0473 in a Volkswagen?
- Regular maintenance checks, such as inspecting the exhaust system and sensors during service intervals, can help prevent issues leading to code P0473.
8. Can a DIY enthusiast repair OBDII code P0473 in a Volkswagen, or is professional help recommended?
- Depending on your skill level and access to tools, some DIY enthusiasts may be able to address this code by replacing the exhaust pressure sensor or repairing wiring. However, professional help is recommended for accurate diagnosis and repairs.
9. How long does it typically take to repair OBDII code P0473 in a Volkswagen?
- The repair time can vary based on the exact cause of the code and the complexity of the repair. In general, it may take a few hours to a half day to diagnose and fix the issue.
10. Can extreme weather conditions affect the triggering of OBDII code P0473 in a Volkswagen?
- Yes, extreme weather conditions can impact the exhaust pressure sensor's readings, potentially leading to the triggering of code P0473. It's essential to consider environmental factors during diagnosis and repair.
Discuss the causes and fixes for P0473 Volkswagen OBDII Code
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I fixed this problem by regenerating the Diesel Particulate Filter (DPF). Basically drive around in 3rd gear at about 3000-3200 RPM for 10-15 minutes. Need to get the DPF hot enough to burn off all the soot build up.
I got home switched the car off ( you could smell it ). The next morning started the car - ENGINE LIGHT OFF!
Oh this was on a VW Golf TDI 2.0 - 2009.
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