P047C Ford Code - Exhaust Pressure Sensor 'B' Circuit Low
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 'B', Exhaust Back Pressure Sensor 'B' harness is open or shorted, Exhaust Back Pressure Sensor 'B' circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P047C Ford indicates Exhaust Pressure Sensor 'B' Circuit Low.
- Common causes
- Common causes include Faulty Exhaust Back Pressure Sensor 'B', Exhaust Back Pressure Sensor 'B' harness is open or shorted, Exhaust Back Pressure Sensor 'B' circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P047C 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 P047C Ford?
- Faulty Exhaust Back Pressure Sensor 'B'
- Exhaust Back Pressure Sensor 'B' harness is open or shorted
- Exhaust Back Pressure Sensor 'B' circuit poor electrical connection
How to Fix the DTC P047C 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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P047C 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.
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Frequently Asked Questions about P047C Ford Code
1. What does OBDII code P047C mean on a Ford vehicle?
P047C indicates that the Exhaust Pressure Sensor 'B' circuit is reading a voltage lower than expected, typically related to the exhaust gas recirculation (EGR) or turbo systems.
2. What are the common symptoms of a P047C code?
Symptoms may include reduced engine performance, poor fuel efficiency, excessive exhaust smoke, or the Check Engine Light being illuminated.
3. What causes the P047C code to appear on a Ford vehicle?
Common causes include a faulty exhaust pressure sensor, damaged wiring or connectors in the sensor circuit, a clogged exhaust system, or issues with the EGR system.
4. Can a faulty exhaust pressure sensor cause drivability issues?
Yes, a faulty sensor can lead to improper exhaust pressure readings, which may affect engine performance and fuel efficiency.
5. How can I diagnose the P047C code on my Ford?
Start by inspecting the wiring and connectors for damage, test the exhaust pressure sensor with a multimeter, and check for blockages in the exhaust system or EGR passages.
6. Is it safe to drive with a P047C code on my Ford?
While the vehicle may still be drivable, ignoring the code can lead to reduced performance and potential damage to the exhaust or EGR system.
7. How do I fix the P047C code on a Ford?
Repairs may include replacing the exhaust pressure sensor, repairing damaged wiring, cleaning the EGR system, or addressing blockages in the exhaust system.
8. How much does it cost to fix a P047C code on a Ford?
The cost depends on the specific issue, but replacing an exhaust pressure sensor typically costs between $100 and $300, including parts and labor.
9. Can a clogged DPF (Diesel Particulate Filter) cause the P047C code?
Yes, a clogged DPF can increase backpressure, potentially leading to low voltage readings from the exhaust pressure sensor.
10. Does clearing the P047C code fix the problem?
Clearing the code will turn off the Check Engine Light temporarily, but the issue will return if the underlying cause is not addressed.
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