P1681 – BMW DTC

BMW DTC P1681 – Electronic Throttle Control Monitor Level 2/3 Engine Speed Calculation Error

DTC P1681 meaning on BMW

DTC P1681 on a BMW indicates an Electronic Throttle Control Monitor Level 2/3 Engine Speed Calculation Error. This error code is related to the electronic throttle control system, which manages the throttle opening in response to driver input.

BMW DTC P1681 symptoms

Symptoms of DTC P1681 on a BMW may include:

• Reduced engine power
• Engine stalling
• Difficulty accelerating
• Check Engine Light illuminated

BMW DTC P1681 causes

Common causes of DTC P1681 on a BMW include:

• Faulty electronic throttle control module
• Issues with the throttle position sensor
• Wiring or connection problems in the throttle control circuit
• Software glitches in the engine control module

BMW DTC P1681 seriousness

DTC P1681 should be addressed promptly as it can lead to drivability issues and potential safety concerns. Ignoring this error code may result in further damage to engine components or lead to a complete loss of engine power.

How to diagnose DTC P1681 on BMW

To diagnose DTC P1681 on a BMW, a mechanic would typically perform the following steps:

1. Use a diagnostic scanner to retrieve the fault codes stored in the engine control module.
2. Inspect the electronic throttle control system for any visible damage or loose connections.
3. Test the throttle position sensor and other related components for proper functionality.
4. Check for any software updates or reprogramming needed for the engine control module.

How to fix DTC P1681 on BMW

To fix DTC P1681 on a BMW, the following steps may be taken:

1. Replace the faulty electronic throttle control module if necessary.
2. Repair or replace any damaged wiring or connectors in the throttle control circuit.
3. Calibrate or replace the throttle position sensor as needed.
4. Perform any software updates or reprogramming recommended by the manufacturer.

How to erase DTC P1681 on BMW

After addressing the underlying issue causing DTC P1681 on a BMW, the fault codes can be cleared using a diagnostic scanner. This will reset the Check Engine Light and erase the stored error code from the engine control module’s memory.

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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