U0157
Lost Communication with Digital Compass Module
2016-2021 Mazda CX-3 2.0L I4
Low SeverityNetworkGeneric (SAE)
Description
Cannot communicate with the digital compass module, often integrated in the rearview mirror or overhead console.
Symptoms
- Compass display blank
- Navigation heading unavailable
- Compass reading stuck
- Overhead console display off
Common Causes
- Compass module failure
- Wiring issue
- Module power loss
- Fuse blown
- Magnetic interference
Diagnostic Steps
- Check compass module power
- Test wiring to module
- Check for magnetic interference sources
- Test module directly
Repair Notes
Check mirror or overhead console wiring. Compass may need calibration after repair.
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
U0157 on Other Vehicles
Common Questions
What does code U0157 mean on a 2016-2021 Mazda CX-3?
U0157 stands for "Lost Communication with Digital Compass Module". Cannot communicate with the digital compass module, often integrated in the rearview mirror or overhead console.
What are the symptoms of U0157 on a Mazda CX-3?
Common symptoms of U0157 include: Compass display blank, Navigation heading unavailable, Compass reading stuck, Overhead console display off.
What causes U0157 on a 2016-2021 Mazda CX-3?
Common causes of U0157 include: Compass module failure, Wiring issue, Module power loss, Fuse blown, Magnetic interference.