Lost Communication with Digital Compass Module
2004-2016 Aston Martin DB9 6.0L V12
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
- U0002High Speed CAN Communication Bus Performance
- U0003High Speed CAN Communication Bus (+) Open
- U0004High Speed CAN Communication Bus (+) Low
- U0005High Speed CAN Communication Bus (+) High
- U0006High Speed CAN Communication Bus (-) Open
- U0007High Speed CAN Communication Bus (-) Low
- U0008High Speed CAN Communication Bus (-) High
- U0009High Speed CAN Communication Bus Shorted Together
- U0010Medium Speed CAN Communication Bus
U0157 on Other Vehicles
Aston Martin DB11
2016-2024 4.0L V8 Twin Turbo
Aston Martin DB11
2016-2024 5.2L V12 Twin Turbo
Aston Martin DB7
1994-2003 3.2L I6 Supercharged
Aston Martin DBS Superleggera
2019-2024 5.2L V12 Twin Turbo
Aston Martin DBX
2020-2024 4.0L V8 Twin Turbo
Aston Martin Vantage
2005-2024 4.7L V8
Aston Martin Vantage
2018-2024 4.0L V8 Twin Turbo
Common Questions
What does code U0157 mean on a 2004-2016 Aston Martin DB9?
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 Aston Martin DB9?
Common symptoms of U0157 include: Compass display blank, Navigation heading unavailable, Compass reading stuck, Overhead console display off.
What causes U0157 on a 2004-2016 Aston Martin DB9?
Common causes of U0157 include: Compass module failure, Wiring issue, Module power loss, Fuse blown, Magnetic interference.