BMW DTC P274A – Transmission Fluid Temperature Sensor ‘C’ Circuit
DTC P274A meaning on BMW
DTC P274A on a BMW refers to a fault with the Transmission Fluid Temperature Sensor ‘C’ Circuit. This diagnostic trouble code indicates that there is an issue with the electrical circuit related to the transmission fluid temperature sensor ‘C’ in the vehicle’s transmission system.
BMW DTC P274A symptoms
Symptoms of DTC P274A on a BMW may include:
- Check Engine Light illuminated on the dashboard
- Transmission shifting issues
- Reduced fuel efficiency
- Transmission overheating
BMW DTC P274A causes
Common causes of DTC P274A on a BMW include:
- Faulty transmission fluid temperature sensor ‘C’
- Wiring or connector issues in the sensor circuit
- Internal transmission problems
BMW DTC P274A seriousness
The seriousness of DTC P274A on a BMW can vary depending on the underlying cause. Ignoring this fault can lead to further transmission issues and potential damage if not addressed promptly.
How to diagnose DTC P274A on BMW
To diagnose DTC P274A on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault code
- Inspect the transmission fluid temperature sensor ‘C’ and its wiring
- Check for any visible damage or corrosion in the sensor circuit
- Test the sensor’s resistance and voltage readings
How to fix DTC P274A on BMW
To fix DTC P274A on a BMW, the following steps may be taken:
- Replace the faulty transmission fluid temperature sensor ‘C’
- Repair any damaged wiring or connectors in the sensor circuit
- Clear the fault code and reset the Check Engine Light
- Test drive the vehicle to ensure the issue has been resolved
How to erase DTC P274A on BMW
To erase DTC P274A on a BMW, a mechanic can use a diagnostic scanner to clear the fault code from the vehicle’s memory. Once the issue has been fixed and the fault code erased, the Check Engine Light should turn off.
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.