BMW DTC P1718 – Transmission Fluid Temperature Sensor ‘A’ Unpermitted Temperature Increase
DTC P1718 meaning on BMW
The Diagnostic Trouble Code (DTC) P1718 for BMW indicates an issue with the Transmission Fluid Temperature Sensor ‘A’ detecting an unpermitted temperature increase. This sensor is responsible for monitoring the temperature of the transmission fluid to ensure it stays within the optimal operating range.
BMW DTC P1718 symptoms
Symptoms of DTC P1718 on a BMW may include:
- Check Engine Light illuminated on the dashboard
- Transmission shifting issues
- Overheating of the transmission
- Reduced fuel efficiency
BMW DTC P1718 causes
Common causes of DTC P1718 on a BMW include:
- Malfunctioning Transmission Fluid Temperature Sensor ‘A’
- Wiring or connector issues in the sensor circuit
- Low transmission fluid level
- Transmission fluid contamination
BMW DTC P1718 seriousness
Ignoring DTC P1718 on a BMW can lead to further damage to the transmission system, potentially resulting in costly repairs. It is important to address this issue promptly to prevent long-term damage and ensure the vehicle’s optimal performance.
How to diagnose DTC P1718 on BMW
To diagnose DTC P1718 on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault code
- Inspect the Transmission Fluid Temperature Sensor ‘A’ and its wiring for any visible damage
- Check the transmission fluid level and condition
- Perform a test drive to monitor transmission behavior
How to fix DTC P1718 on BMW
To fix DTC P1718 on a BMW, the following steps may be taken:
- Replace the faulty Transmission Fluid Temperature Sensor ‘A’
- Repair or replace any damaged wiring or connectors in the sensor circuit
- Ensure the transmission fluid level is correct and free from contamination
- Clear the fault code and reset the Check Engine Light
How to erase DTC P1718 on BMW
To erase DTC P1718 on a BMW, the fault code can be cleared using a diagnostic scanner. Once the underlying issue has been addressed and fixed, the code can be cleared to reset the Check Engine Light and ensure the system is functioning properly.
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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