P2446 – BMW DTC

BMW DTC P2446 – AIR System Pump Stuck On (Bank 2)

DTC P2446 meaning on BMW

DTC P2446 on a BMW indicates that the AIR (Air Injection Reaction) system pump for Bank 2 is stuck in the on position. The AIR system is responsible for injecting fresh air into the exhaust system to help reduce emissions during cold starts.

BMW DTC P2446 symptoms

Symptoms of DTC P2446 on a BMW may include:

• Check Engine Light illuminated
• Reduced engine performance
• Increased fuel consumption
• Possible rough idling or stalling

BMW DTC P2446 causes

The common causes of DTC P2446 on a BMW include:

• Faulty AIR system pump
• Wiring or connector issues in the AIR system circuit
• Problems with the AIR system control module

BMW DTC P2446 seriousness

While DTC P2446 may not cause immediate drivability issues, it can lead to increased emissions and potential long-term engine damage if left unresolved. It is recommended to address this issue promptly to maintain optimal vehicle performance and emissions compliance.

How to diagnose DTC P2446 on BMW

To diagnose DTC P2446 on a BMW, you can perform the following steps:

1. Use a diagnostic scanner to retrieve the fault code and related data
2. Inspect the AIR system pump, wiring, and connectors for any visible damage or corrosion
3. Check the AIR system control module for proper operation
4. Perform a smoke test to check for leaks in the AIR system

How to fix DTC P2446 on BMW

To fix DTC P2446 on a BMW, you may need to:

1. Replace the faulty AIR system pump
2. Repair any damaged wiring or connectors in the AIR system circuit
3. Reset the fault code and monitor the system for proper operation

How to erase DTC P2446 on BMW

To erase DTC P2446 on a BMW, you can:

1. Use a diagnostic scanner to clear the fault code
2. Ensure that the underlying issue causing the fault code has been resolved
3. Perform a test drive to confirm that the Check Engine Light does not reappear

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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