P044D – BMW DTC

BMW DTC P044D – EGR Sensor ‘C’ Circuit High

DTC P044D meaning on BMW

The DTC P044D error code on a BMW indicates an issue with the EGR (Exhaust Gas Recirculation) Sensor ‘C’ Circuit registering a high voltage signal. This fault is typically related to a problem with the EGR system, which is responsible for recirculating a portion of the exhaust gases back into the engine’s intake manifold to reduce emissions.

BMW DTC P044D symptoms

Symptoms of a DTC P044D error code on a BMW may include:

• Check Engine Light (MIL) illuminated on the dashboard
• Decreased engine performance or rough idling
• In some cases, the vehicle may go into a reduced power mode

BMW DTC P044D causes

The common causes of a DTC P044D error code on a BMW include:

• Malfunctioning EGR Sensor ‘C’
• Wiring or connector issues in the EGR sensor circuit
• Carbon buildup in the EGR system

BMW DTC P044D seriousness

While a DTC P044D error code may not cause immediate drivability issues, it is essential to address the problem promptly to prevent potential damage to the engine or emissions system. Ignoring this fault could lead to increased emissions and reduced fuel efficiency.

How to diagnose DTC P044D on BMW

To diagnose a DTC P044D error code on a BMW, a mechanic may perform the following steps:

1. Use a diagnostic scanner to retrieve the specific fault code
2. Inspect the EGR Sensor ‘C’ and its wiring for any visible damage or corrosion
3. Test the EGR sensor’s voltage and resistance to determine if it is functioning correctly
4. Clean the EGR system components to remove any carbon buildup

How to fix DTC P044D on BMW

To fix a DTC P044D error code on a BMW, the following steps may be taken:

1. Replace the faulty EGR Sensor ‘C’ if it is determined to be the cause of the issue
2. Repair any damaged wiring or connectors in the EGR sensor circuit
3. Clean the EGR system thoroughly to remove any carbon deposits
4. Reset the fault codes and perform a test drive to ensure the issue has been resolved

How to erase DTC P044D on BMW

To erase a DTC P044D error code on a BMW, follow these steps:

1. Use a diagnostic scanner to clear the fault codes stored in the vehicle’s ECU
2. Ensure that the underlying issue causing the fault code has been addressed and resolved
3. Perform a final check to confirm that the error code has been successfully cleared

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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