U1267 – BMW DTC

BMW DTC U1267 – Message Monitoring Master-ECM With Slave-ECM Interconnection 6 Alive Check

DTC U1267 meaning on BMW

DTC U1267 on a BMW refers to the Message Monitoring Master-ECM With Slave-ECM Interconnection 6 Alive Check. This diagnostic trouble code indicates a communication issue between the master Engine Control Module (ECM) and the slave ECM in the vehicle’s network system.

BMW DTC U1267 symptoms

Symptoms of DTC U1267 on a BMW may include:

• Check Engine Light (MIL) illuminated
• Communication error messages on the vehicle’s display
• Intermittent or permanent loss of communication between ECMs

BMW DTC U1267 causes

Possible causes of DTC U1267 on a BMW include:

• Faulty wiring or connectors in the communication network
• Defective ECM(s)
• Software issues in the ECMs
• Interference from other electronic components

BMW DTC U1267 seriousness

DTC U1267 should be addressed promptly as it can lead to communication breakdown between critical control modules in the vehicle. Ignoring this issue may result in performance issues, safety concerns, or potential drivability problems.

How to diagnose DTC U1267 on BMW

To diagnose DTC U1267 on a BMW, follow these steps:

1. Use a diagnostic scanner to retrieve the fault codes stored in the ECMs.
2. Inspect the wiring harness and connectors for any visible damage or corrosion.
3. Perform a communication test using a diagnostic tool to check for connectivity between the master and slave ECMs.
4. Check for any software updates or reprogramming needed for the ECMs.

How to fix DTC U1267 on BMW

To fix DTC U1267 on a BMW, consider the following:

1. Repair or replace any damaged wiring or connectors in the communication network.
2. If the ECM is faulty, replace it with a new or remanufactured unit.
3. Update the software in the ECMs to the latest version.
4. Ensure proper installation and configuration of the ECMs.

How to erase DTC U1267 on BMW

To erase DTC U1267 on a BMW, use a diagnostic scanner to clear the fault codes stored in the ECMs. After addressing the underlying issue causing the fault code, perform a final scan to ensure the code 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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