BMW DTC P1B68 – Drive Motor Inverter Temperature Sensor ‘C’ Circuit Temperature Implausible Low
DTC P1B68 meaning on BMW
The DTC P1B68 code for BMW indicates an issue with the Drive Motor Inverter Temperature Sensor ‘C’ Circuit Temperature being implausibly low. This means that the sensor responsible for monitoring the temperature of the drive motor inverter is reporting a temperature that is lower than expected or deemed realistic by the vehicle’s computer system.
BMW DTC P1B68 symptoms
Symptoms associated with the BMW DTC P1B68 code may include:
- Check Engine Light illuminated on the dashboard
- Reduced power or performance from the vehicle
- Irregular shifting patterns in automatic transmissions
- Increased fuel consumption
BMW DTC P1B68 causes
The potential causes for the DTC P1B68 code on a BMW include:
- Faulty Drive Motor Inverter Temperature Sensor ‘C’
- Wiring or connection issues in the temperature sensor circuit
- Issues with the drive motor inverter itself
- Software glitches or malfunctions in the vehicle’s control module
BMW DTC P1B68 seriousness
While the DTC P1B68 code may not always result in immediate drivability issues, it is important to address the underlying problem promptly. Ignoring this code can lead to further damage to the vehicle’s components and potentially affect its overall performance and efficiency.
How to diagnose DTC P1B68 on BMW
To diagnose the DTC P1B68 code on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the specific fault code and related data
- Inspect the Drive Motor Inverter Temperature Sensor ‘C’ and its wiring for any visible damage or corrosion
- Check the connections and terminals of the sensor for proper contact
- Test the sensor’s resistance and voltage output to determine if it is functioning correctly
- Inspect the drive motor inverter for any signs of damage or malfunction
How to fix DTC P1B68 on BMW
To address the DTC P1B68 code on a BMW, the following steps may be taken:
- Replace the Drive Motor Inverter Temperature Sensor ‘C’ if it is found to be faulty
- Repair or replace any damaged wiring or connections in the sensor circuit
- If the drive motor inverter is determined to be the issue, it may need to be repaired or replaced
- Clear the fault code from the vehicle’s memory after the repairs have been completed
How to erase DTC P1B68 on BMW
To erase the DTC P1B68 code on a BMW, the fault code can be cleared using a diagnostic scanner or by disconnecting the vehicle’s battery for a few minutes. However, it is important to address and resolve the underlying issue causing the fault code before clearing it to prevent it from reoccurring.
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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