P0474 – BMW DTC

BMW DTC P0474 – Exhaust Pressure Sensor ‘A’ Circuit Intermittent/Erratic

DTC P0474 meaning on BMW

The Diagnostic Trouble Code (DTC) P0474 for BMW refers to an issue with the Exhaust Pressure Sensor ‘A’ Circuit. This code indicates that there is an intermittent or erratic signal coming from the exhaust pressure sensor in the vehicle’s exhaust system.

BMW DTC P0474 symptoms

Symptoms of DTC P0474 on a BMW may include:

• Check Engine Light illuminated on the dashboard
• Reduced engine performance
• Increased fuel consumption
• Engine stalling or rough idling

BMW DTC P0474 causes

The common causes of DTC P0474 on a BMW include:

• Faulty exhaust pressure sensor
• Wiring or connector issues in the exhaust pressure sensor circuit
• Exhaust system leaks
• Software or calibration issues

BMW DTC P0474 seriousness

While DTC P0474 may not cause immediate harm to the vehicle, it can lead to reduced engine performance and increased fuel consumption. Ignoring this code may result in further damage to the engine or emissions system over time.

How to diagnose DTC P0474 on BMW

To diagnose DTC P0474 on a BMW, you can follow these steps:

1. Use a diagnostic scanner to retrieve the fault code and freeze frame data
2. Inspect the wiring and connectors related to the exhaust pressure sensor
3. Check the exhaust system for leaks or damage
4. Test the exhaust pressure sensor using a multimeter

How to fix DTC P0474 on BMW

To fix DTC P0474 on a BMW, you can try the following solutions:

1. Replace the faulty exhaust pressure sensor
2. Repair any damaged wiring or connectors in the sensor circuit
3. Fix any leaks in the exhaust system
4. Update the vehicle’s software or calibration if necessary

How to erase DTC P0474 on BMW

To erase DTC P0474 on a BMW, you can use a diagnostic scanner to clear the code after the underlying issue has been resolved. Once the fault has been fixed, clearing the code will reset the Check Engine Light and ensure that the system is functioning properly.

Recommended tools & DTC Scanners for BMW

Best Diagnostic App for modern BMWs: BimmerLink

Recommended Bluetooth adapter for Bimmerlink: OBDLink CX

Cable adapter for Bimmerlink: Enet Cable USB Type C

For older BMWs we recommend: Autel AutoLink AL319 (2024 version)

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

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