P0064 – BMW DTC

BMW DTC P0064 – HO2S Heater Control Circuit High (Bank 2 Sensor 3)

DTC P0064 meaning on BMW

DTC P0064 for BMW refers to the code for the Heated Oxygen Sensor (HO2S) Heater Control Circuit High on Bank 2 Sensor 3. This code indicates that there is a high voltage condition detected in the heater control circuit of the oxygen sensor located on Bank 2 Sensor 3 in the exhaust system.

BMW DTC P0064 symptoms

Symptoms of DTC P0064 on a BMW may include:

• Check Engine Light illuminated on the dashboard
• Decreased fuel efficiency
• Engine running rough or misfiring
• Possible sulfur or rotten egg smell from the exhaust

BMW DTC P0064 causes

Common causes of DTC P0064 on a BMW include:

• Faulty oxygen sensor heater
• Short circuit or open circuit in the oxygen sensor heater wiring
• Defective oxygen sensor heater relay
• Issues with the engine control module (ECM)

BMW DTC P0064 seriousness

While DTC P0064 may not cause immediate drivability issues, it is important to address this code promptly to prevent potential damage to the catalytic converter and ensure optimal engine performance and fuel efficiency.

How to diagnose DTC P0064 on BMW

To diagnose DTC P0064 on a BMW, you can perform the following steps:

1. Use an OBD-II scanner to retrieve the fault code and freeze frame data
2. Inspect the wiring and connectors of the Bank 2 Sensor 3 oxygen sensor
3. Check the resistance of the oxygen sensor heater circuit
4. Test the oxygen sensor heater relay
5. Verify proper operation of the ECM

How to fix DTC P0064 on BMW

To fix DTC P0064 on a BMW, you can try the following solutions:

1. Replace the Bank 2 Sensor 3 oxygen sensor if the heater is faulty
2. Repair any damaged wiring or connectors in the oxygen sensor heater circuit
3. Replace the oxygen sensor heater relay if defective
4. Reset the ECM and clear the fault code

How to erase DTC P0064 on BMW

To erase DTC P0064 on a BMW, you can use an OBD-II scanner to clear the fault code after addressing the underlying issue causing the code. Once the repair has been completed, you can reset the ECM and erase the fault code 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

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