P0472 Code - Exhaust Pressure Sensor Low
Quick Answer
The P0472 diagnostic trouble code (DTC) refers to the Exhaust Pressure Sensor Low. Common causes include Faulty exhaust pressure sensor, Wiring or connector issues, Clogged or restricted exhaust 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
- P0472 indicates Exhaust Pressure Sensor Low.
- Common causes
- Common causes include Faulty exhaust pressure sensor, Wiring or connector issues, Clogged or restricted exhaust 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 P0472 Description
The P0472 diagnostic trouble code (DTC) refers to the Exhaust Pressure Sensor Low. This code indicates that the exhaust pressure sensor is detecting a lower than normal pressure in the exhaust system. The exhaust pressure sensor is a crucial component of the vehicle's emissions system, monitoring the pressure in the exhaust system to ensure optimal performance and fuel efficiency. When the sensor detects low pressure, it can lead to a variety of issues that can impact the vehicle's overall performance.
Common Causes of P0472
- Faulty exhaust pressure sensor
- Wiring or connector issues
- Clogged or restricted exhaust system
- Exhaust gas recirculation (EGR) valve malfunction
- Exhaust system leaks
Symptoms of P0472
- Decreased fuel efficiency
- Reduced engine power
- Engine stalling or difficulty starting
- Check Engine light illuminated
How to Fix P0472
- Diagnose the issue by using a scan tool to confirm the P0472 code and perform a visual inspection of the exhaust pressure sensor and related components.
- Test the exhaust pressure sensor using a multimeter to determine if it is functioning correctly.
- Inspect the wiring and connectors for any signs of damage or corrosion, repairing or replacing as necessary.
- Check the exhaust system for any obstructions, leaks, or damages that could be affecting the pressure readings.
- Replace the exhaust pressure sensor if it is found to be faulty, ensuring proper installation and calibration.
Cost to Fix P0472
The cost of repairing a P0472 code can vary depending on the specific cause of the issue and the make and model of the vehicle. In general, the cost of replacing an exhaust pressure sensor can range from $100 to $300, including parts and labor. Additional costs may be incurred if other components of the exhaust system need to be repaired or replaced. It's important to consult with a qualified mechanic or auto repair shop to get an accurate estimate based on the individual circumstances of the vehicle. The diagnosis time and labor rates at auto repair shops can vary, so it's recommended to check local rates for a more precise cost estimate.
Tech Notes for P0472
When is the Code Detected?
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Code P0472 Information for Specific Makes
- P0472 Audi — Exhaust Pressure Sensor Low
- P0472 Dodge — Exhaust Pressure Sensor Low
- P0472 Ford — Exhaust Pressure Sensor Low
- P0472 Mercedes-Benz — Exhaust Pressure Sensor Low
- P0472 Volkswagen — Exhaust Pressure Sensor Low
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