U0169
Lost Communication with Fuel Level Control Module
2016-2021 Mazda CX-3 2.0L I4
Low SeverityNetworkGeneric (SAE)
Description
Cannot communicate with the fuel level sender or fuel gauge control module.
Symptoms
- Fuel gauge not reading
- Fuel level stuck at one position
- Low fuel warning inaccurate
- Range calculator not working
Common Causes
- Fuel level module failure
- CAN bus wiring
- Module power loss
- Fuel sender failure
- Fuse blown
Diagnostic Steps
- Check fuel gauge module fuse
- Test power and ground
- Check CAN wiring
- Test fuel level sender resistance
- Inspect fuel tank wiring connector
Repair Notes
Check fuses and fuel sender. Fuel sender is most common failure point.
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
U0169 on Other Vehicles
Common Questions
What does code U0169 mean on a 2016-2021 Mazda CX-3?
U0169 stands for "Lost Communication with Fuel Level Control Module". Cannot communicate with the fuel level sender or fuel gauge control module.
What are the symptoms of U0169 on a Mazda CX-3?
Common symptoms of U0169 include: Fuel gauge not reading, Fuel level stuck at one position, Low fuel warning inaccurate, Range calculator not working.
What causes U0169 on a 2016-2021 Mazda CX-3?
Common causes of U0169 include: Fuel level module failure, CAN bus wiring, Module power loss, Fuel sender failure, Fuse blown.