Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means the car's computer is getting a weak signal from the sensor that checks the pressure in the exhaust. It's like trying to listen to a whisper from far away.
The P0472 code indicates that the signal from the exhaust pressure sensor is lower than the expected range.
The exhaust pressure sensor measures the pressure in the exhaust system to help the engine control module (ECM) optimize performance and emissions. A low circuit signal suggests that the sensor is not sending the correct voltage to the ECM, which could be due to a faulty sensor, wiring issues, or a problem with the ECM itself.
• Check Engine Light is on
• Reduced engine performance
• Increased fuel consumption
• Faulty exhaust pressure sensor
• Damaged or corroded wiring/connectors
• Faulty ECM
ECM: Engine Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code.
• Visually inspect the exhaust pressure sensor and wiring for damage.
• Test the sensor voltage and compare it to specifications.
• Replace the exhaust pressure sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Ford F-Series
• Chevrolet Silverado
• Dodge Ram
• Regularly inspect and maintain exhaust system components.
• Ensure wiring and connectors are free from corrosion.
• Perform routine diagnostic checks.
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Regular maintenance can prevent sensor issues.
Check with the vehicle manufacturer for specific warranty coverage on emissions-related components.
This code has been more common in diesel engines due to their complex exhaust systems.
Moderate – It should be addressed soon to avoid further engine performance issues.
Driving with a faulty exhaust pressure sensor can lead to increased emissions and may not comply with emission regulations.
• Engine running
• Vehicle at operating temperature
The exhaust pressure sensor is typically located near the exhaust manifold or turbocharger.
Q: Can I drive with code P0472?
A: It's possible to drive short distances, but it's best to fix the issue to avoid further damage.
Q: How do I reset the Check Engine Light after repairs?
A: Use an OBD-II scanner to clear the code after confirming the repair is successful.
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