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P0601 – BMW DTC

BMW DTC P0601 – Internal Control Module Memory Check Sum Error

DTC P0601 meaning on BMW

DTC P0601 on a BMW indicates an Internal Control Module Memory Check Sum Error. This error code is triggered when the Engine Control Module (ECM) detects a checksum error in its memory. The checksum is a value calculated from the data stored in the ECM’s memory, and if the calculated checksum does not match the expected value, the error code is set.

BMW DTC P0601 symptoms

Symptoms of a DTC P0601 on a BMW may include:

  • Check Engine Light (MIL) illuminated
  • Engine running rough
  • Reduced engine performance
  • Difficulty starting the engine

BMW DTC P0601 causes

The common causes of a DTC P0601 on a BMW include:

  • Corrupted ECM software
  • Faulty ECM hardware
  • Intermittent electrical connection issues
  • Voltage spikes or drops

BMW DTC P0601 seriousness

While a DTC P0601 may not always result in immediate drivability issues, it is important to address this error code promptly. Ignoring this error can lead to potential long-term damage to the vehicle’s ECM and affect overall engine performance.

How to diagnose DTC P0601 on BMW

To diagnose a DTC P0601 on a BMW, a mechanic would typically perform the following steps:

  1. Use a diagnostic scanner to retrieve the error code and freeze frame data
  2. Inspect the ECM for any signs of physical damage
  3. Check for any loose or corroded electrical connections
  4. Perform a voltage test to ensure proper power supply to the ECM

How to fix DTC P0601 on BMW

To fix a DTC P0601 on a BMW, the following steps may be taken:

  1. Update the ECM software to the latest version
  2. Replace the ECM if it is found to be faulty
  3. Repair any damaged or corroded electrical connections
  4. Address any underlying issues that may have caused the error code

How to erase DTC P0601 on BMW

After fixing the underlying issue causing the DTC P0601 on a BMW, the error code can be erased using a diagnostic scanner. The scanner can clear the code from the ECM’s memory, and the Check Engine Light should turn off once the code is successfully cleared.

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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