U1810 – BMW DTC

BMW DTC U1810 – Lost Communication With Hybrid/EV Battery Pack Evaluation Electronics

DTC U1810 meaning on BMW

The Diagnostic Trouble Code (DTC) U1810 on a BMW indicates a communication error with the Hybrid/EV Battery Pack Evaluation Electronics. This code is specific to hybrid or electric vehicles and suggests a problem with the communication system between the vehicle’s onboard computer and the evaluation electronics of the hybrid or electric battery pack.

BMW DTC U1810 symptoms

Symptoms of the DTC U1810 on a BMW may include:

• Check Engine Light (CEL) illuminated on the dashboard
• Reduced hybrid or electric powertrain performance
• Issues with the hybrid or electric battery charging
• Difficulty starting the vehicle

BMW DTC U1810 causes

The DTC U1810 on a BMW can be caused by various factors, including:

• Faulty Hybrid/EV Battery Pack Evaluation Electronics
• Wiring or connection issues between the evaluation electronics and the vehicle’s computer
• Software glitches or communication protocol errors

BMW DTC U1810 seriousness

The seriousness of the DTC U1810 code on a BMW depends on the underlying cause. Ignoring this code can lead to further complications with the hybrid or electric powertrain system, potentially resulting in reduced performance or even drivability issues. It is recommended to address this code promptly to prevent any long-term damage to the vehicle.

How to diagnose DTC U1810 on BMW

To diagnose the DTC U1810 on a BMW, a mechanic would typically perform the following steps:

1. Use a diagnostic scanner to retrieve the specific fault codes stored in the vehicle’s computer
2. Inspect the wiring and connections between the Hybrid/EV Battery Pack Evaluation Electronics and the vehicle’s computer
3. Check for any software updates or reprogramming needed for the evaluation electronics

How to fix DTC U1810 on BMW

Fixing the DTC U1810 on a BMW may involve the following actions:

1. Repair or replace any faulty Hybrid/EV Battery Pack Evaluation Electronics
2. Address any wiring or connection issues identified during diagnosis
3. Update software or reprogram the evaluation electronics as necessary

How to erase DTC U1810 on BMW

To erase the DTC U1810 code on a BMW, follow these steps:

1. Use a diagnostic scanner to clear the fault codes stored in the vehicle’s computer
2. Ensure that the underlying issue causing the code has been resolved
3. Perform a test drive to confirm that the code does not reappear

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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