P0475 – OBD-II DTC

OBD-II DTC P0475 – Exhaust Pressure Sensor Intermittent

DTC P0475 meaning

DTC P0475 refers to an issue with the exhaust pressure sensor circuit, indicating that the sensor is experiencing intermittent problems. This code is triggered when the Engine Control Module (ECM) detects that the exhaust pressure sensor is not providing a consistent signal, which can affect the vehicle’s performance and emissions control systems.

DTC P0475 symptoms

Common symptoms associated with DTC P0475 may include:

• Check Engine Light illuminated
• Decreased engine performance
• Increased fuel consumption
• Rough idling or stalling
• Failed emissions test

DTC P0475 causes

Several factors can lead to the triggering of DTC P0475, including:

• Faulty exhaust pressure sensor
• Wiring issues, such as frayed or damaged wires
• Corroded or loose electrical connectors
• Exhaust leaks affecting sensor readings
• Faulty Engine Control Module (ECM)

DTC P0475 seriousness

DTC P0475 can be considered a moderate to serious issue. While it may not cause immediate engine failure, it can lead to:

• Increased emissions
• Potential damage to the engine or exhaust system
• Reduced fuel efficiency
• Failure to pass emissions testing

How to diagnose DTC P0475

To diagnose DTC P0475, follow these steps:

1. Use an OBD-II scanner to confirm the DTC and check for any related codes.
2. Inspect the exhaust pressure sensor and its wiring for visible damage or corrosion.
3. Test the exhaust pressure sensor using a multimeter to ensure it is functioning within specifications.
4. Check for exhaust leaks that may affect sensor readings.
5. Examine the ECM for any faults or software updates that may be necessary.

How to fix DTC P0475 step-by-step instructions

To fix DTC P0475, follow these steps:

1. Repair or replace any damaged wiring or connectors related to the exhaust pressure sensor.
2. If the exhaust pressure sensor is faulty, replace it with a new one.
3. Seal any exhaust leaks that may be present in the system.
4. Clear any fault codes using an OBD-II scanner.
5. Test drive the vehicle to ensure the issue is resolved and the Check Engine Light does not reappear.

How to erase DTC P0475

To erase DTC P0475, you can follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the ignition without starting the engine.
3. Navigate to the “Erase Codes” or “Clear Codes” option on the scanner.
4. Confirm the action to clear the DTC from the ECM.
5. Disconnect the scanner and start the vehicle to check if the code returns.

Recommended tools for OBD-II diagnostics

Explore our expert picks: The Best OBD2 Scanners for 2025

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.