BMW DTC P1737 – Internal Transmission Control Module Level 2 Error, Interference Counter 4 below Threshold
DTC P1737 meaning on BMW
The DTC P1737 on a BMW indicates an Internal Transmission Control Module Level 2 Error, specifically stating that the Interference Counter 4 is below the threshold. This error code is related to the transmission control module’s internal functions and communication within the transmission system.
BMW DTC P1737 symptoms
Symptoms of the DTC P1737 on a BMW may include erratic shifting behavior, transmission slipping, harsh shifting, transmission not engaging properly, or the transmission going into limp mode. The vehicle may also display a warning light on the dashboard indicating a transmission fault.
BMW DTC P1737 causes
The causes of the DTC P1737 on a BMW can vary, but common reasons include faulty transmission control module, wiring issues, internal transmission faults, low transmission fluid level, or software glitches within the transmission control module.
BMW DTC P1737 seriousness
The DTC P1737 error code on a BMW should be taken seriously as it directly relates to the transmission control module’s functionality. Ignoring this issue can lead to further transmission problems, potential damage to the transmission components, and unsafe driving conditions.
How to diagnose DTC P1737 on BMW
To diagnose the DTC P1737 on a BMW, a professional diagnostic scanner capable of reading BMW transmission fault codes is required. The technician will perform a scan to retrieve the specific error code and then proceed with further testing to pinpoint the exact cause of the issue.
- Scan the transmission control module for fault codes.
- Check the transmission fluid level and condition.
- Inspect the wiring harness for any damage or loose connections.
- Perform a test drive to observe the transmission behavior.
How to fix DTC P1737 on BMW
Fixing the DTC P1737 on a BMW may involve various steps depending on the root cause of the issue. Common solutions include:
- Repair or replace the transmission control module if faulty.
- Address any wiring issues or repair damaged wiring harnesses.
- Perform a transmission fluid flush and refill if the level is low or the fluid is degraded.
- Update the transmission control module software to the latest version.
How to erase DTC P1737 on BMW
To erase the DTC P1737 on a BMW, the fault code needs to be cleared using a diagnostic scanner. After the necessary repairs have been made, the technician can use the scanner to clear the fault code from the transmission control module’s memory. This will reset the system and allow for a fresh start to monitor the transmission’s operation.
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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