BMW DTC P1698 – Transmission Control Module Control Error
DTC P1698 meaning on BMW
DTC P1698 on a BMW indicates a Transmission Control Module (TCM) Control Error. This fault code is triggered when the TCM detects a communication error or malfunction within its control system.
BMW DTC P1698 symptoms
Symptoms of DTC P1698 on a BMW may include erratic shifting behavior, transmission slipping, harsh shifting, or the transmission going into limp mode. The vehicle may also display a warning light on the dashboard indicating a transmission fault.
BMW DTC P1698 causes
The causes of DTC P1698 on a BMW can vary and may include issues such as faulty wiring connections, a defective TCM, a malfunctioning transmission solenoid, or a communication error between the TCM and other control modules in the vehicle.
BMW DTC P1698 seriousness
DTC P1698 should be taken seriously as it can lead to drivability issues and potential damage to the transmission if left unresolved. It is recommended to address this fault code promptly to prevent further complications.
How to diagnose DTC P1698 on BMW
To diagnose DTC P1698 on a BMW, a diagnostic scan tool capable of reading transmission fault codes is required. The technician will need to retrieve the specific fault code, perform a visual inspection of the transmission components, check for any loose or damaged wiring, and conduct further testing to pinpoint the exact cause of the issue.
How to fix DTC P1698 on BMW
Fixing DTC P1698 on a BMW may involve repairing or replacing faulty wiring connections, addressing any issues with the TCM or transmission solenoid, and ensuring proper communication between the control modules. It is recommended to follow the manufacturer’s diagnostic and repair procedures to resolve the fault effectively.
How to erase DTC P1698 on BMW
Once the underlying issue causing DTC P1698 on a BMW has been fixed, the fault code can be erased using a diagnostic scan tool. The technician can clear the code from the vehicle’s memory, and if the repair was successful, the warning light should no longer illuminate, indicating that the fault has been resolved.
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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