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P2259 – BMW DTC

BMW DTC P2259 – AIR System Control ‘B’ Circuit Low

DTC P2259 meaning on BMW

DTC P2259 for BMW refers to the AIR System Control ‘B’ Circuit Low. This diagnostic trouble code indicates that there is a low voltage condition detected in the control circuit of the secondary air injection system.

BMW DTC P2259 symptoms

Symptoms of DTC P2259 on a BMW may include:

  • Check Engine Light illuminated
  • Reduced engine performance
  • Increased emissions

BMW DTC P2259 causes

Common causes of DTC P2259 on a BMW include:

  • Faulty AIR system control solenoid
  • Wiring issues in the control circuit
  • ECU (Engine Control Unit) malfunction

BMW DTC P2259 seriousness

While DTC P2259 may not cause immediate drivability issues, it can lead to increased emissions and potential long-term engine problems if left unresolved. It is recommended to address this issue promptly.

How to diagnose DTC P2259 on BMW

To diagnose DTC P2259 on a BMW, you can perform the following steps:

  1. Use a diagnostic scanner to retrieve the fault codes
  2. Inspect the wiring and connectors in the AIR system control circuit
  3. Test the AIR system control solenoid for proper operation
  4. Check the ECU for any faults related to the control circuit

How to fix DTC P2259 on BMW

To fix DTC P2259 on a BMW, you can try the following solutions:

  1. Replace the faulty AIR system control solenoid
  2. Repair any damaged wiring or connectors in the control circuit
  3. If the ECU is faulty, consider reprogramming or replacing it

How to erase DTC P2259 on BMW

To erase DTC P2259 on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the ECU. After addressing the underlying issue and making the necessary repairs, you can reset the codes to turn off the Check Engine Light.

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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