P0473 Code - Exhaust Pressure Sensor High
Quick Answer
The P0473 diagnostic trouble code (DTC) indicates a problem with the exhaust pressure sensor in the vehicle. Common causes include Faulty exhaust pressure sensor, Clogged or restricted exhaust system, Issues with the EGR system. 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 indicates Exhaust Pressure Sensor High.
- Common causes
- Common causes include Faulty exhaust pressure sensor, Clogged or restricted exhaust system, Issues with the EGR system.
- 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 Description
The P0473 diagnostic trouble code (DTC) indicates a problem with the exhaust pressure sensor in the vehicle. The exhaust pressure sensor is a crucial component of the exhaust system that measures the pressure in the exhaust stream. This sensor plays a vital role in controlling the exhaust gas recirculation (EGR) system, which helps reduce emissions and improve fuel efficiency.
Common Causes of P0473
- Faulty exhaust pressure sensor
- Clogged or restricted exhaust system
- Issues with the EGR system
- Wiring or electrical problems
- Exhaust leaks or damaged components
Symptoms of P0473
- Check engine light illuminated on the dashboard
- Reduced engine power or acceleration
- Increased fuel consumption
- Rough idling or stalling
- Exhaust system noise or leaks
How to Fix P0473
- Diagnose the issue by using a scan tool to read the DTC and inspecting the exhaust pressure sensor and related components.
- Check for any clogs or restrictions in the exhaust system and clean or replace as necessary.
- Test the EGR system for proper function and repair or replace any faulty components.
- Inspect the wiring and connections to the exhaust pressure sensor and repair any damaged wires or connectors.
- Clear the DTC and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0473
The cost of repairing a P0473 code can vary depending on the specific cause of the issue and the make and model of the vehicle. In general, the cost of parts for this repair can range from $50 to $200, while labor costs can range from $100 to $300. Overall, the total repair cost for this issue may be between $150 and $500. It's important to note that labor rates at auto repair shops can vary, so it's recommended to check with local shops for more accurate pricing information.
Tech Notes for P0473
When is the Code Detected?
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Code P0473 Information for Specific Makes
- P0473 Audi — Exhaust Pressure Sensor High
- P0473 Dodge — Exhaust Pressure Sensor High
- P0473 Ford — Exhaust Pressure Sensor High
- P0473 Mercedes-Benz — Exhaust Pressure Sensor High
- P0473 Volkswagen — Exhaust Pressure Sensor High
Frequently Asked Questions about P0473 Code
1. What are the common symptoms of OBDII code P0473 (Exhaust Pressure Sensor High)?
- Common symptoms include decreased engine performance, rough idling, decreased fuel efficiency, and potential black smoke from the exhaust.
2. What are the possible causes of OBDII code P0473?
- The code P0473 can be triggered by a faulty exhaust pressure sensor, wiring issues in the sensor circuit, or a problem with the exhaust system itself.
3. How can I diagnose the cause of OBDII code P0473?
- Diagnosing the cause of P0473 usually involves checking the exhaust pressure sensor for proper operation, inspecting the sensor wiring for damage, and ensuring there are no leaks or blockages in the exhaust system.
4. Can a high exhaust pressure sensor cause engine damage?
- A faulty exhaust pressure sensor may not directly cause engine damage, but it can lead to poor engine performance and decreased fuel efficiency if left unresolved.
5. How can I repair OBDII code P0473?
- Repairing P0473 typically involves replacing the faulty exhaust pressure sensor, repairing any damaged wiring in the sensor circuit, or addressing any issues in the exhaust system causing high pressure readings.
6. Is it safe to continue driving with OBDII code P0473 active?
- It is not recommended to continue driving with an active P0473 code as it can lead to poor engine performance and potential damage if left unresolved.
7. Can I reset OBDII code P0473 without fixing the underlying issue?
- While you can clear the code temporarily, it will likely reappear if the underlying issue causing the high exhaust pressure sensor reading is not addressed.
8. How much does it typically cost to repair OBDII code P0473?
- The cost of repairing P0473 can vary depending on the cause of the issue, but it may involve sensor replacement, wiring repairs, or exhaust system repairs, potentially ranging from $100 to $500 or more.
9. Are there any DIY methods to troubleshoot OBDII code P0473?
- DIY methods for troubleshooting P0473 may include visually inspecting the sensor and wiring, checking for exhaust system leaks, and using an OBDII scanner to monitor sensor readings.
10. Will OBDII code P0473 cause my vehicle to fail an emissions test?
- Yes, OBDII code P0473 can cause your vehicle to fail an emissions test due to the impact on engine performance and emissions control systems.
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