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P3273 – BMW DTC

BMW DTC P3273 – Mass or Volume Air Flow Too Low due to Too Low Signal Frequency

DTC P3273 meaning on BMW

DTC P3273 on a BMW indicates that the Mass or Volume Air Flow is too low due to a low signal frequency. This means that the engine control module (ECM) is receiving a signal from the Mass Air Flow (MAF) sensor that is below the expected range, potentially leading to drivability issues.

BMW DTC P3273 symptoms

Symptoms of DTC P3273 on a BMW may include:

  • Reduced engine power
  • Poor acceleration
  • Engine stalling
  • Rough idling
  • Check Engine Light illuminated

BMW DTC P3273 causes

The common causes of DTC P3273 on a BMW include:

  • Dirty or faulty MAF sensor
  • Air intake leaks
  • Faulty wiring or connectors in the MAF sensor circuit
  • Issues with the ECM

BMW DTC P3273 seriousness

DTC P3273 should not be ignored as it can lead to poor engine performance and potential drivability issues. Continuing to drive with this fault may cause further damage to engine components.

How to diagnose DTC P3273 on BMW

To diagnose DTC P3273 on a BMW, you can perform the following steps:

  1. Use a diagnostic scanner to retrieve the fault codes and freeze frame data
  2. Inspect the MAF sensor for dirt or damage
  3. Check for any air intake leaks
  4. Inspect the wiring and connectors in the MAF sensor circuit
  5. Perform a visual inspection of the ECM for any signs of damage

How to fix DTC P3273 on BMW

To fix DTC P3273 on a BMW, you can try the following solutions:

  1. Clean or replace the MAF sensor if dirty or faulty
  2. Repair any air intake leaks
  3. Repair or replace any damaged wiring or connectors in the MAF sensor circuit
  4. If necessary, replace the ECM

How to erase DTC P3273 on BMW

To erase DTC P3273 on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the ECM. Once the issue has been fixed and the codes cleared, the Check Engine Light should turn off.

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

← All BMW Diagnostic Trouble Codes

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