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P1780 – BMW DTC

BMW DTC P1780 – CAN Torque Reduction

DTC P1780 meaning on BMW

The Diagnostic Trouble Code (DTC) P1780 for BMW refers to a CAN (Controller Area Network) Torque Reduction request. This code indicates that the engine control module (ECM) has requested a reduction in engine torque via the CAN communication network.

BMW DTC P1780 symptoms

Symptoms of DTC P1780 on a BMW may include:

  • Reduced engine power
  • Engine stalling
  • Difficulty accelerating
  • Check Engine Light (CEL) illuminated

BMW DTC P1780 causes

Common causes of DTC P1780 on a BMW include:

  • Issues with the throttle position sensor
  • Faulty engine control module (ECM)
  • Wiring or communication network problems
  • Faulty CAN communication module

BMW DTC P1780 seriousness

The seriousness of DTC P1780 on a BMW depends on the underlying cause. Ignoring this code can lead to drivability issues and potential safety concerns. It is recommended to address this code promptly to prevent further damage to the vehicle.

How to diagnose DTC P1780 on BMW

To diagnose DTC P1780 on a BMW, a mechanic would typically perform the following steps:

  1. Use a diagnostic scanner to retrieve the fault codes
  2. Inspect the throttle position sensor and related wiring
  3. Check the CAN communication network for faults
  4. Test the engine control module (ECM) for proper function

How to fix DTC P1780 on BMW

To fix DTC P1780 on a BMW, the following steps may be taken:

  1. Replace the faulty throttle position sensor
  2. Repair or replace damaged wiring or connectors
  3. Address any issues with the engine control module (ECM)
  4. Ensure proper communication on the CAN network

How to erase DTC P1780 on BMW

To erase DTC P1780 on a BMW, the fault codes can be cleared using a diagnostic scanner. After addressing the underlying issue and making necessary repairs, the codes can be cleared to reset the Check Engine Light and verify that the problem 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

← All BMW Diagnostic Trouble Codes

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