U1822 – BMW DTC

BMW DTC U1822 – Drive Motor ‘A’ Control Module Message Monitoring Diagnosis OBD Hybrid via FlexRay Alive Check

DTC U1822 meaning on BMW

DTC U1822 on a BMW refers to the Drive Motor ‘A’ Control Module Message Monitoring Diagnosis OBD Hybrid via FlexRay Alive Check. This diagnostic trouble code indicates an issue with the communication between the drive motor control module and other modules in the vehicle.

BMW DTC U1822 symptoms

Symptoms of DTC U1822 on a BMW may include:

• Check Engine Light illuminated
• Reduced power or performance
• Vehicle may go into a limp mode

BMW DTC U1822 causes

Common causes of DTC U1822 on a BMW include:

• Faulty drive motor control module
• Issues with the FlexRay communication network
• Wiring or connection problems

BMW DTC U1822 seriousness

DTC U1822 should be addressed promptly as it can affect the performance and drivability of the vehicle. Ignoring this code may lead to further damage to the vehicle’s components.

How to diagnose DTC U1822 on BMW

To diagnose DTC U1822 on a BMW, you can follow these steps:

1. Use a diagnostic scanner to retrieve the fault codes
2. Check for any related codes or symptoms
3. Inspect the wiring and connections related to the drive motor control module
4. Perform a communication test on the FlexRay network

How to fix DTC U1822 on BMW

To fix DTC U1822 on a BMW, you may need to:

1. Repair or replace any damaged wiring or connections
2. Replace the drive motor control module if faulty
3. Ensure proper communication on the FlexRay network

How to erase DTC U1822 on BMW

To erase DTC U1822 on a BMW, you can use a diagnostic scanner to clear the fault codes after the underlying issue has been resolved. This will reset the Check Engine Light and allow you to monitor the system for any reoccurrence of the fault code.

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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