BMW DTC P274D – Transmission Fluid Temperature Sensor ‘C’ Circuit High
DTC P274D meaning on BMW
DTC P274D is a diagnostic trouble code that indicates an issue with the Transmission Fluid Temperature Sensor ‘C’ Circuit on a BMW vehicle. This code specifically points to a high voltage condition detected in the circuit related to the transmission fluid temperature sensor ‘C’.
BMW DTC P274D symptoms
Symptoms of DTC P274D on a BMW may include:
- Check Engine Light illuminated on the dashboard
- Transmission shifting issues
- Reduced fuel efficiency
- Transmission overheating
BMW DTC P274D causes
Common causes of DTC P274D on a BMW include:
- Faulty transmission fluid temperature sensor ‘C’
- Wiring or connector issues in the sensor circuit
- Internal transmission problems
BMW DTC P274D seriousness
DTC P274D should be addressed promptly as it can lead to potential transmission issues and affect the overall performance and reliability of the vehicle. Ignoring this code may result in further damage to the transmission system.
How to diagnose DTC P274D on BMW
To diagnose DTC P274D on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the transmission fluid temperature sensor ‘C’ and its wiring for any visible damage
- Check the sensor’s resistance and voltage readings
- Perform a thorough inspection of the transmission system for any related issues
How to fix DTC P274D on BMW
To fix DTC P274D on a BMW, the following steps may be taken:
- Replace the faulty transmission fluid temperature sensor ‘C’
- Repair or replace any damaged wiring or connectors in the sensor circuit
- Address any internal transmission problems if detected
- Clear the fault codes and reset the Check Engine Light
How to erase DTC P274D on BMW
To erase DTC P274D on a BMW, the fault codes can be cleared using a diagnostic scanner. After the necessary repairs have been made to address the underlying issue causing the fault code, the scanner can be used to reset the codes and 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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