Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with a sensor that measures the pressure of the exhaust gases coming out of the engine. It's like a thermometer that isn't working right, so the car can't tell how hot the exhaust is.
The P047A code is triggered when the Engine Control Module (ECM) detects a problem with the exhaust pressure sensor circuit. This sensor helps monitor the pressure of exhaust gases to ensure the engine runs efficiently.
The P047A code indicates an issue with the exhaust pressure sensor 'B' circuit. This sensor is responsible for measuring the pressure of exhaust gases in the exhaust system. The ECM uses this data to adjust the engine's performance and emissions control systems. A fault in this circuit can lead to inaccurate readings, affecting engine efficiency and emissions.
• Check Engine Light is on
• Decreased fuel efficiency
• Reduced engine performance
• Faulty exhaust pressure sensor
• Wiring issues in the sensor circuit
• Connector problems or corrosion
ECM: Engine Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code.
• Inspect the exhaust pressure sensor and its wiring for damage.
• Test the sensor's electrical connections for continuity.
• Replace the faulty exhaust pressure sensor.
• Repair or replace damaged wiring or connectors.
• Clear the code and test drive the vehicle to ensure the issue is resolved.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Ford F-250
• Chevrolet Silverado
• Dodge Ram
• Regular maintenance of the exhaust system.
• Ensure sensors are checked during routine service.
• Keep the vehicle's electrical system in good condition.
Sensor Issue
• If you notice a decrease in fuel efficiency, have the vehicle checked.
• Do not ignore the Check Engine Light; it could lead to more serious issues.
Check with your vehicle manufacturer; emissions-related components may be covered under warranty.
This code has been associated with issues in diesel engines, particularly in vehicles with complex emissions systems.
Moderate – While the vehicle may still be drivable, it could lead to increased emissions and reduced performance.
Driving with a faulty exhaust pressure sensor can lead to higher emissions, which may not comply with local environmental regulations.
• Engine running
• Vehicle at operating temperature
The exhaust pressure sensor is typically located on the exhaust manifold or near the turbocharger.
Q: What happens if I ignore the P047A code?
A: Ignoring this code can lead to decreased engine performance and increased emissions, potentially causing further damage to the engine.
Q: Can I drive my car with a P047A code?
A: While you may be able to drive the car, it's not recommended as it can lead to more serious issues over time.
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