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P1279 – BMW DTC

BMW DTC P1279 – Engine Smoothness Control Correction Quantity Too Low

DTC P1279 meaning on BMW

DTC P1279 on a BMW indicates that the Engine Smoothness Control Correction Quantity is too low. This means that the engine control module (ECM) has detected that the correction value for maintaining engine smoothness is not within the expected range.

BMW DTC P1279 symptoms

Symptoms of DTC P1279 on a BMW may include:

  • Engine misfires
  • Rough idling
  • Loss of power
  • Poor fuel efficiency

BMW DTC P1279 causes

The common causes of DTC P1279 on a BMW include:

  • Faulty fuel injectors
  • Issues with the ignition system
  • Vacuum leaks
  • Dirty or clogged fuel filters

BMW DTC P1279 seriousness

While DTC P1279 may not always result in immediate engine failure, it can lead to poor engine performance and reduced fuel efficiency. Ignoring this fault code can potentially cause further damage to the engine components over time.

How to diagnose DTC P1279 on BMW

To diagnose DTC P1279 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 fuel injectors for proper operation and cleanliness.
  3. Check the ignition system components such as spark plugs and ignition coils.
  4. Inspect for any vacuum leaks in the intake system.
  5. Check the fuel filters for clogs or contamination.

How to fix DTC P1279 on BMW

To fix DTC P1279 on a BMW, you can try the following solutions:

  1. Clean or replace faulty fuel injectors.
  2. Repair or replace any faulty ignition system components.
  3. Fix any vacuum leaks in the intake system.
  4. Replace clogged or dirty fuel filters.
  5. Reset the ECM and clear the fault code.

How to erase DTC P1279 on BMW

To erase DTC P1279 on a BMW, you can use a diagnostic scanner to clear the fault code from the ECM’s memory. After fixing the underlying issue that caused the fault code, you can reset the ECM and ensure that the code does not reappear during subsequent driving cycles.

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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