P1687 – BMW DTC

BMW DTC P1687 – Electronic Throttle Control Monitor Level 2/3 Throttle Position Sensor Diagnostic Error

DTC P1687 meaning on BMW

The Diagnostic Trouble Code (DTC) P1687 for BMW refers to an Electronic Throttle Control Monitor Level 2/3 Throttle Position Sensor Diagnostic Error. This code indicates that there is a fault detected in the throttle position sensor monitoring system, specifically at levels 2 and 3.

BMW DTC P1687 symptoms

Symptoms of the BMW DTC P1687 may include:

• Reduced engine power
• Engine stalling
• Difficulty accelerating
• Check Engine Light illuminated on the dashboard

BMW DTC P1687 causes

Common causes of the BMW DTC P1687 include:

• Faulty throttle position sensor
• Wiring or connector issues in the throttle position sensor circuit
• Electronic control module (ECM) malfunction

BMW DTC P1687 seriousness

The BMW DTC P1687 is a serious issue that should be addressed promptly. Ignoring this fault can lead to drivability issues and potential safety concerns while driving.

How to diagnose DTC P1687 on BMW

To diagnose the DTC P1687 on a BMW, you can follow these steps:

1. Use a diagnostic scanner to retrieve the fault codes stored in the vehicle’s ECM.
2. Inspect the throttle position sensor and its wiring for any visible damage or corrosion.
3. Perform a thorough inspection of the electronic throttle control system components.
4. Test the throttle position sensor using a multimeter to check for proper voltage and resistance values.

How to fix DTC P1687 on BMW

To fix the DTC P1687 on a BMW, you can try the following solutions:

1. Replace the faulty throttle position sensor with a new one.
2. Repair any damaged wiring or connectors in the throttle position sensor circuit.
3. If the ECM is found to be faulty, consider replacing or reprogramming it.
4. Clear the fault codes using a diagnostic scanner after the repairs have been completed.

How to erase DTC P1687 on BMW

To erase the DTC P1687 on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the ECM. Follow these steps:

1. Connect the diagnostic scanner to the vehicle’s OBD-II port.
2. Select the option to erase fault codes from the ECM.
3. Follow the on-screen prompts to complete the fault code clearing process.
4. Once the process is complete, verify that the DTC P1687 has been successfully erased.

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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