P2220 – BMW DTC

BMW DTC P2220 – NOx Sensor Heater Control Circuit High (Bank 2)

DTC P2220 meaning on BMW

The Diagnostic Trouble Code (DTC) P2220 for BMW refers to an issue with the NOx (Nitrogen Oxide) sensor heater control circuit on Bank 2. This code indicates that the control circuit for the NOx sensor heater on Bank 2 is detecting a high voltage condition, which can lead to improper sensor operation and affect the vehicle’s emissions control system.

BMW DTC P2220 symptoms

Symptoms of DTC P2220 on a BMW may include:

• Check Engine Light (MIL) illuminated
• Reduced engine performance
• Increased emissions
• Possible decrease in fuel efficiency

BMW DTC P2220 causes

Common causes of DTC P2220 on a BMW include:

• Faulty NOx sensor heater
• Short circuit or open circuit in the sensor heater wiring
• Defective sensor heater control module
• Corrosion or poor connections in the sensor heater circuit

BMW DTC P2220 seriousness

While DTC P2220 may not cause immediate drivability issues, it is important to address this code promptly to prevent potential damage to the emissions control system and ensure the vehicle meets environmental regulations.

How to diagnose DTC P2220 on BMW

To diagnose DTC P2220 on a BMW, you can perform the following steps:

1. Use a diagnostic scan tool to retrieve the fault code and freeze frame data
2. Inspect the wiring and connectors related to the NOx sensor heater on Bank 2
3. Test the NOx sensor heater for proper resistance and voltage
4. Check for any corrosion or damage in the sensor heater circuit

How to fix DTC P2220 on BMW

To fix DTC P2220 on a BMW, you may need to:

1. Replace the faulty NOx sensor heater
2. Repair any damaged wiring or connectors in the sensor heater circuit
3. Replace the sensor heater control module if necessary
4. Clean or repair any corrosion in the sensor heater circuit

How to erase DTC P2220 on BMW

To erase DTC P2220 on a BMW, you can:

1. Use a diagnostic scan tool to clear the fault code
2. After making the necessary repairs, drive the vehicle to allow the system to retest and verify the issue has been resolved
3. If the fault code does not return, the DTC P2220 has been successfully erased

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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