P0471 Ford 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 Ford 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 Ford 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 Ford?
- 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 Ford?
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 Ford 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 P0471 Ford code?
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Frequently Asked Questions about P0471 Ford Code
1. What are the common symptoms of OBDII code P0471 in a Ford vehicle?
The common symptoms of OBDII code P0471 in a Ford vehicle include reduced engine power, poor fuel efficiency, and possible illumination of the Check Engine Light.
2. What can cause the OBDII code P0471 to appear in a Ford vehicle?
The OBDII code P0471 in a Ford vehicle is typically triggered by a faulty exhaust pressure sensor, damaged wiring or connectors, or a problem with the exhaust system itself.
3. How serious is the OBDII code P0471 in a Ford vehicle?
While the OBDII code P0471 may not cause immediate engine failure, it is important to address the issue promptly to prevent potential long-term damage to the engine or exhaust system.
4. How can I diagnose the OBDII code P0471 in my Ford vehicle?
Diagnosing the OBDII code P0471 involves using a diagnostic scanner to read the code, checking the exhaust pressure sensor and related components for damage, and inspecting the wiring for any issues.
5. Can I drive my Ford vehicle with the OBDII code P0471?
It is not recommended to drive your Ford vehicle with the OBDII code P0471, as it can lead to poor engine performance and potential damage if left unresolved.
6. How can I repair the OBDII code P0471 in my Ford vehicle?
Repairing the OBDII code P0471 typically involves replacing the faulty exhaust pressure sensor, repairing any damaged wiring or connectors, and clearing the code with a diagnostic scanner.
7. Are there any DIY tips for fixing the OBDII code P0471 in a Ford vehicle?
While some DIY enthusiasts may attempt to replace the exhaust pressure sensor themselves, it is recommended to consult a professional mechanic for proper diagnosis and repair of the issue.
8. How much does it cost to fix the OBDII code P0471 in a Ford vehicle?
The cost of fixing the OBDII code P0471 in a Ford vehicle can vary depending on the root cause of the issue, but it typically ranges from $100 to $300 for parts and labor.
9. Can a dirty air filter trigger the OBDII code P0471 in a Ford vehicle?
A dirty air filter is unlikely to trigger the OBDII code P0471 directly, but it can contribute to poor engine performance and potentially worsen the effects of the underlying issue causing the code.
10. Is it necessary to reset the ECU after repairing the OBDII code P0471 in a Ford vehicle?
It is recommended to reset the ECU (Engine Control Unit) after repairing the OBDII code P0471 in a Ford vehicle to clear the code from the system and ensure proper operation of the engine.
Discuss the causes and fixes for P0471 Ford OBDII Code
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2012 f-450 cranks but wont start. P0471 active. Replaced EP sensor. Same code active checked barometric pressure vs exhaust pressure and compared to another truck in my fleet. Readings are the same but no code for the known good vehicle.
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