BMW DTC P1691 – Electronic Throttle Control Monitor Level 2/3 Motorised Throttle Control Engine Speed Limitation Error
DTC P1691 meaning on BMW
DTC P1691 on a BMW indicates an Electronic Throttle Control Monitor Level 2/3 Motorised Throttle Control Engine Speed Limitation Error. This error code is related to the electronic throttle control system, which manages the engine’s throttle opening based on driver input and various sensor inputs.
BMW DTC P1691 symptoms
Symptoms of DTC P1691 on a BMW may include:
- Reduced engine power
- Engine speed limitation
- Check Engine Light (CEL) illuminated on the dashboard
- Difficulty accelerating
BMW DTC P1691 causes
Common causes of DTC P1691 on a BMW include:
- Issues with the electronic throttle control system
- Faulty throttle position sensor
- Wiring or connector issues in the throttle control circuit
- Software glitches in the engine control module
BMW DTC P1691 seriousness
DTC P1691 should be taken seriously as it can lead to reduced engine performance and potentially unsafe driving conditions. Ignoring this error code may result in further damage to engine components.
How to diagnose DTC P1691 on BMW
To diagnose DTC P1691 on a BMW, you can perform the following steps:
- Use a diagnostic scanner to retrieve the specific error code
- Inspect the throttle control system for any visible damage or loose connections
- Check the throttle position sensor for proper operation
- Perform a throttle body cleaning to ensure smooth operation
How to fix DTC P1691 on BMW
To fix DTC P1691 on a BMW, you can try the following solutions:
- Replace the faulty throttle position sensor
- Repair any damaged wiring or connectors in the throttle control circuit
- Update the engine control module software to the latest version
- Perform a throttle body calibration to ensure proper operation
How to erase DTC P1691 on BMW
To erase DTC P1691 on a BMW, you can use a diagnostic scanner to clear the error code from the engine control module’s memory. Once the issue has been fixed and the error 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
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