BMW DTC P1920 – Transmission Fluid Temperature Sensor ‘C’ Circuit Range/Performance
DTC P1920 meaning on BMW
The Diagnostic Trouble Code (DTC) P1920 for BMW refers to the Transmission Fluid Temperature Sensor ‘C’ Circuit Range/Performance. This code indicates that there is an issue with the transmission fluid temperature sensor or its circuitry in the vehicle’s transmission system.
BMW DTC P1920 symptoms
Symptoms of DTC P1920 on a BMW may include:
- Check Engine Light illuminated on the dashboard
- Transmission shifting issues
- Transmission overheating
- Reduced fuel efficiency
BMW DTC P1920 causes
Common causes of DTC P1920 on a BMW include:
- Faulty transmission fluid temperature sensor
- Wiring or connector issues in the sensor circuit
- Low transmission fluid level
- Internal transmission problems
BMW DTC P1920 seriousness
The seriousness of DTC P1920 on a BMW depends on the underlying cause. Ignoring this code can lead to potential transmission damage and drivability issues. It is recommended to address this code promptly to prevent further damage to the transmission system.
How to diagnose DTC P1920 on BMW
To diagnose DTC P1920 on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault code and freeze frame data
- Inspect the transmission fluid temperature sensor and its wiring for any visible damage
- Check the transmission fluid level and condition
- Perform a thorough inspection of the transmission system for any other related issues
How to fix DTC P1920 on BMW
To fix DTC P1920 on a BMW, you can consider the following actions:
- Replace the faulty transmission fluid temperature sensor
- Repair or replace any damaged wiring or connectors in the sensor circuit
- Ensure the transmission fluid level is correct and top up if necessary
- If internal transmission problems are detected, consult a professional mechanic for further diagnosis and repair
How to erase DTC P1920 on BMW
To erase DTC P1920 on a BMW, you can use a diagnostic scanner to clear the fault code from the vehicle’s memory. After addressing the underlying issue causing the code, clearing the code will reset the Check Engine Light and monitor the system for any recurring faults.
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
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.