P1B64 – BMW DTC

BMW DTC P1B64 – Drive Motor Inverter Temperature Sensor ‘B’ Circuit Temperature Out of Range High

DTC P1B64 meaning on BMW

DTC P1B64 on a BMW indicates that the Drive Motor Inverter Temperature Sensor ‘B’ Circuit Temperature is Out of Range High. This means that the temperature sensor responsible for monitoring the drive motor inverter’s temperature is reporting a value that is higher than the expected range.

BMW DTC P1B64 symptoms

Symptoms of DTC P1B64 on a BMW may include:

• Check Engine Light illuminated
• Reduced power or performance
• Increased fuel consumption
• Abnormal temperature readings on the dashboard

BMW DTC P1B64 causes

Common causes of DTC P1B64 on a BMW include:

• Failed drive motor inverter temperature sensor ‘B’
• Wiring or connection issues in the temperature sensor circuit
• Faulty drive motor inverter

BMW DTC P1B64 seriousness

DTC P1B64 should be addressed promptly as it can lead to further damage to the drive motor inverter and affect the vehicle’s performance. Ignoring this fault may result in more severe issues and potential safety concerns.

How to diagnose DTC P1B64 on BMW

To diagnose DTC P1B64 on a BMW, you can follow these steps:

1. Use a diagnostic scanner to retrieve the fault codes and identify the specific code P1B64.
2. Inspect the drive motor inverter temperature sensor ‘B’ and its wiring for any visible damage or corrosion.
3. Check the drive motor inverter for any signs of malfunction or overheating.
4. Perform a temperature sensor test to verify its functionality and readings.

How to fix DTC P1B64 on BMW

To fix DTC P1B64 on a BMW, you can try the following solutions:

1. Replace the drive motor inverter temperature sensor ‘B’ if it is faulty.
2. Repair any damaged wiring or connections in the temperature sensor circuit.
3. If the drive motor inverter is faulty, consider replacing it with a new unit.
4. Clear the fault codes using a diagnostic scanner after the repairs are completed.

How to erase DTC P1B64 on BMW

To erase DTC P1B64 on a BMW, follow these steps:

1. Ensure that the underlying issue causing the fault code has been resolved.
2. Use a diagnostic scanner to access the vehicle’s onboard computer system.
3. Select the option to clear or erase fault codes from the system.
4. Confirm the action and wait for the scanner to complete the process.

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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