U1164 – BMW DTC

BMW DTC U1164 – Message Monitoring Engine Control Check Sum Error

DTC U1164 meaning on BMW

The DTC U1164 on a BMW refers to a Message Monitoring Engine Control Check Sum Error. This diagnostic trouble code indicates that there is an error in the checksum calculation for the engine control module’s messages. The engine control module uses checksums to verify the integrity of the data being transmitted between various control modules in the vehicle.

BMW DTC U1164 symptoms

Symptoms of the BMW DTC U1164 may include:

• Check Engine Light (MIL) illuminated
• Reduced engine performance
• Engine stalling or rough idling
• Problems with transmission shifting

BMW DTC U1164 causes

Common causes of the BMW DTC U1164 include:

• Corrupted data in the engine control module
• Faulty wiring or connections between control modules
• Software issues in the engine control module

BMW DTC U1164 seriousness

The DTC U1164 on a BMW should be addressed promptly as it can lead to drivability issues and potential damage to the vehicle if left unresolved. Ignoring this error code may result in further complications and increased repair costs.

How to diagnose DTC U1164 on BMW

To diagnose the DTC U1164 on a BMW, follow these steps:

1. Use a diagnostic scanner to retrieve the fault codes stored in the engine control module.
2. Inspect the wiring and connections between the control modules for any signs of damage or corrosion.
3. Check for any software updates or reprogramming available for the engine control module.

How to fix DTC U1164 on BMW

To fix the DTC U1164 on a BMW, consider the following:

1. Clear the fault codes using a diagnostic scanner and monitor the vehicle for any recurring issues.
2. If the problem persists, consult a professional mechanic to further diagnose and repair the underlying cause.
3. Address any wiring or connection issues and ensure proper communication between control modules.

How to erase DTC U1164 on BMW

To erase the DTC U1164 on a BMW:

1. Use a diagnostic scanner to clear the fault codes stored in the engine control module.
2. After clearing the codes, perform a test drive to ensure the issue has been resolved.
3. If the Check Engine Light does not reappear, the DTC U1164 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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