BMW DTC P1660 – EWS (Electronic Immobilizer) Telegram Error
DTC P1660 meaning on BMW
The DTC P1660 error code on BMW vehicles refers to an issue with the Electronic Immobilizer system, also known as the EWS (Electronic Drive-Away Protection). The EWS is a security feature that prevents the engine from starting without the correct key or signal.
BMW DTC P1660 symptoms
Symptoms of the BMW DTC P1660 error code may include the engine cranking but not starting, the engine starting and then immediately stalling, or the engine not starting at all. Additionally, the immobilizer warning light on the dashboard may be illuminated.
BMW DTC P1660 causes
The DTC P1660 error code on BMW vehicles is commonly caused by issues with the key transponder, faulty wiring connections between the EWS module and the engine control unit (ECU), or a malfunction within the EWS module itself.
BMW DTC P1660 seriousness
The DTC P1660 error code is a serious issue as it can prevent the vehicle from starting, leading to inconvenience and potential immobilization. It is important to address this problem promptly to ensure the proper functioning of the vehicle’s security system.
How to diagnose DTC P1660 on BMW
To diagnose the DTC P1660 error on a BMW, a diagnostic scan tool capable of reading BMW-specific fault codes is required. The technician will need to retrieve the fault code, check for any related codes, and perform a thorough inspection of the key transponder, wiring connections, and EWS module for any visible signs of damage or malfunction.
How to fix DTC P1660 on BMW
Fixing the DTC P1660 error on a BMW may involve reprogramming the key transponder, repairing or replacing any faulty wiring connections, or replacing the EWS module if necessary. It is recommended to consult with a qualified automotive technician or BMW specialist to accurately diagnose and resolve the issue.
How to erase DTC P1660 on BMW
Once the underlying issue causing the DTC P1660 error on a BMW has been identified and resolved, the fault code can be erased using a diagnostic scan tool. The technician can clear the code from the vehicle’s ECU memory, allowing the engine to start normally without triggering the immobilizer system.
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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