U0115
Lost Communication with ECM/PCM B
2014-2021 Mitsubishi Outlander 2.4L I4
Critical SeverityNetworkGeneric (SAE)
Description
Cannot communicate with the secondary Engine Control Module on vehicles with dual ECMs.
Symptoms
- Partial engine management failure
- Some cylinders not controlled
- Reduced power
- Check Engine Light
Common Causes
- ECM B power failure
- CAN bus wiring
- ECM B failure
- Fuse blown
- Connector issue
Diagnostic Steps
- Check ECM B fuse
- Test power and ground
- Check CAN wiring
- Try direct communication with ECM B
- Compare ECM A and B communication status
Repair Notes
Dual ECM vehicles are less common. Check power supply to secondary ECM.
Related Codes
Other Network Codes
- U0001High Speed CAN Communication Bus
- U0001High Speed CAN Communication Bus
- U0002High Speed CAN Communication Bus Performance
- U0002High Speed CAN Communication Bus Performance
- U0003High Speed CAN Communication Bus (+) Open
- U0003High Speed CAN Communication Bus (+) Open
- U0004High Speed CAN Communication Bus (+) Low
- U0004High Speed CAN Communication Bus (+) Low
- U0005High Speed CAN Communication Bus (+) High
- U0005High Speed CAN Communication Bus (+) High
U0115 on Other Vehicles
Mitsubishi Colt JP
2002-2012 1.3L I4 4A90
Mitsubishi Colt JP
2002-2012 1.5L I4 4A91
Mitsubishi Delica D:5
2019-2025 2.2L I4 Turbo Diesel 4N14
Mitsubishi Eclipse
2000-2005 2.4L I4
Mitsubishi Eclipse
2000-2005 3.0L V6
Mitsubishi Eclipse
2000-2012 2.4L I4
Mitsubishi Eclipse
2006-2012 2.4L I4
Mitsubishi Eclipse
2006-2012 3.8L V6
Common Questions
What does code U0115 mean on a 2014-2021 Mitsubishi Outlander?
U0115 stands for "Lost Communication with ECM/PCM B". Cannot communicate with the secondary Engine Control Module on vehicles with dual ECMs.
What are the symptoms of U0115 on a Mitsubishi Outlander?
Common symptoms of U0115 include: Partial engine management failure, Some cylinders not controlled, Reduced power, Check Engine Light.
What causes U0115 on a 2014-2021 Mitsubishi Outlander?
Common causes of U0115 include: ECM B power failure, CAN bus wiring, ECM B failure, Fuse blown, Connector issue.