U1027critical severityNetwork
Lost Communication with SRS Unit
on 2011 Acura RL 3.7L V6 · AWD
What this code means
The vehicle has lost communication with the SRS (airbag) control unit over the CAN bus. Equivalent to generic code U0151.
Symptoms
- SRS/airbag warning light on
- Airbag system disabled
- Communication fault stored
Common causes
- Faulty SRS unit wiring or connector
- Failed SRS control unit
- Blown SRS fuse
- CAN bus fault
Diagnostic steps
- Scan for SRS and network codes
- Check SRS unit power and ground
- Test CAN wiring to SRS unit
- Inspect connectors and replace faulty module
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Any of these will read and clear this code — pick by how deep you want to go.
Budget handheld~$40
ANCEL AD410 →
No-phone-needed handheld — reads, clears, live data, freeze frame.
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Serious DIY~$100
BlueDriver Pro →
Enhanced codes (ABS, airbag, TPMS) plus repair reports.
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Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
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Autel MaxiSys MS906 Pro →
Full-system pro platform — topology mapping, ECU coding, the works.
✓ Autel official store
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Other Network codes on this vehicle
U0001
High Speed CAN Communication Bus
U0002
High Speed CAN Communication Bus Performance
U0003
High Speed CAN Communication Bus (+) Open
U0004
High Speed CAN Communication Bus (+) Low
U0005
High Speed CAN Communication Bus (+) High
U0006
High Speed CAN Communication Bus (-) Open
U0007
High Speed CAN Communication Bus (-) Low
U0008
High Speed CAN Communication Bus (-) High
U0009
High Speed CAN Communication Bus Shorted Together
U0010
Medium Speed CAN Communication Bus