BMW DTC P2749 – Intermediate Shaft Speed Sensor ‘C’ Circuit
DTC P2749 meaning on BMW
DTC P2749 on a BMW refers to an issue with the Intermediate Shaft Speed Sensor ‘C’ circuit. This diagnostic trouble code indicates that there is a problem with the electrical circuit associated with the speed sensor located on the intermediate shaft of the transmission.
BMW DTC P2749 symptoms
Symptoms of DTC P2749 on a BMW may include erratic shifting behavior, transmission slipping, hesitation during acceleration, and in some cases, the transmission may go into a fail-safe or limp mode. The Check Engine Light may also be illuminated on the dashboard.
BMW DTC P2749 causes
The most common causes of DTC P2749 on a BMW include a faulty intermediate shaft speed sensor, damaged wiring or connectors in the sensor circuit, or a malfunction in the transmission control module.
BMW DTC P2749 seriousness
DTC P2749 should be addressed promptly as it can lead to drivability issues and potential damage to the transmission if left unresolved. Ignoring this fault code may result in further transmission problems and increased repair costs.
How to diagnose DTC P2749 on BMW
To diagnose DTC P2749 on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault code and perform a thorough inspection of the intermediate shaft speed sensor, wiring, and connectors. Testing the sensor’s resistance and checking for any signs of physical damage can help pinpoint the issue.
How to fix DTC P2749 on BMW
Fixing DTC P2749 on a BMW usually involves replacing the faulty intermediate shaft speed sensor, repairing any damaged wiring or connectors, and clearing the fault code from the vehicle’s memory. It is important to use genuine BMW parts and follow the manufacturer’s repair procedures to ensure a proper fix.
How to erase DTC P2749 on BMW
To erase DTC P2749 on a BMW, a diagnostic scanner capable of clearing fault codes is required. Once the underlying issue has been addressed and fixed, the fault code can be cleared from the vehicle’s memory using the scanner. This will reset the Check Engine Light and ensure that the repair was successful.
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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