U1847
Drive Motor Control Module 1 Lost Communication With Battery Energy Control Module On Powertrain Expansion CAN Bus
U1847 is an OBD-II diagnostic trouble code meaning: Drive Motor Control Module 1 Lost Communication With Battery Energy Control Module On Powertrain Expansion CAN Bus. Common causes: broken or damaged can bus wires, poor contact in module connectors. Estimated repair cost: $56–222.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Gear shifting problems
- The car goes into emergency mode
- Unstable engine operation
Causes
- Broken or damaged CAN bus wires
- Poor contact in module connectors
- Engine control module malfunction
- Battery management module malfunction
- Problems with module power supply
How to Fix
- Check the integrity of the CAN bus wiring
- Inspect and clean the module connector contacts
- Check power supply of modules
- Scan modules for additional errors
- If necessary, replace the faulty module
Related codes
FAQ
What does the U1847 code mean?
U1847 is an OBD-II diagnostic trouble code that indicates: Drive Motor Control Module 1 Lost Communication With Battery Energy Control Module On Powertrain Expansion CAN Bus
What causes a U1847 error code?
The most common causes of U1847 include: Broken or damaged CAN bus wires; Poor contact in module connectors; Engine control module malfunction; Battery management module malfunction.
How do I fix a U1847 diagnostic trouble code?
To fix U1847: Check the integrity of the CAN bus wiring. Inspect and clean the module connector contacts. Check power supply of modules. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U1847?
Limited driving only, diagnose soon
How much does it cost to fix U1847?
The estimated repair cost for U1847 is $56–222. Actual cost depends on your vehicle, location, and labor rates.
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