BMW DTC P2206 – NOx Sensor Heater Control Circuit Low (Bank 1 Sensor 1)
DTC P2206 meaning on BMW
DTC P2206 on a BMW indicates an issue with the NOx (Nitrogen Oxide) sensor heater control circuit for Bank 1 Sensor 1. This fault code specifically points to a low voltage condition in the heater control circuit of the NOx sensor located before the catalytic converter on Bank 1 of the engine.
BMW DTC P2206 symptoms
Symptoms of DTC P2206 on a BMW may include:
- Check Engine Light (MIL) illuminated
- Reduced engine performance
- Possible increase in emissions
BMW DTC P2206 causes
Common causes of DTC P2206 on a BMW include:
- Faulty NOx sensor heater
- Wiring or connector issues in the NOx sensor heater circuit
- Corrosion or poor connections in the sensor circuit
- Internal ECM (Engine Control Module) fault
BMW DTC P2206 seriousness
While DTC P2206 may not cause immediate drivability issues, it is important to address this fault as it can lead to increased emissions and potential long-term engine performance problems if left unresolved.
How to diagnose DTC P2206 on BMW
To diagnose DTC P2206 on a BMW, you can perform the following steps:
- Use a diagnostic scanner to retrieve the fault code and freeze frame data
- Inspect the wiring and connectors in the NOx sensor heater circuit for any damage or corrosion
- Test the NOx sensor heater for proper resistance and voltage
- Check for any other related fault codes or issues in the system
How to fix DTC P2206 on BMW
To fix DTC P2206 on a BMW, you can follow these steps:
- Replace the faulty NOx sensor heater if it is determined to be the cause
- Repair any damaged wiring or connectors in the NOx sensor heater circuit
- Clean or replace any corroded connections in the sensor circuit
- If necessary, diagnose and address any internal ECM faults
How to erase DTC P2206 on BMW
To erase DTC P2206 on a BMW, you can use a diagnostic scanner to clear the fault code after the underlying issue has been fixed. This will reset the Check Engine Light and allow the vehicle’s ECM to monitor the system for any new faults.
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
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.