High Speed CAN Communication Bus (+) High
2014-2014 Cadillac SRX 3.0L V6
The 2014 Cadillac SRX is equipped with a 3.0L V6 engine. Below you'll find detailed u0005 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
The CAN High wire voltage is higher than expected, indicating a short to battery voltage.
Symptoms
- CAN bus communication failure
- Multiple module faults
- Warning lights on
Common Causes
- CAN H wire shorted to battery power
- Wiring harness damage
- Module internal fault driving CAN H high
Diagnostic Steps
- Measure CAN H voltage (should not exceed 4V)
- Inspect wiring for shorts to power wires
- Disconnect modules to isolate fault
- Check for wiring harness rub-through
Repair Notes
Repair the short to power on CAN H. Often caused by wiring harness rubbing against sharp edge.
Related Codes
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
- 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
- U0028Vehicle Communication Bus A Performance
U0005 on Other Vehicles
Common Questions
What does code U0005 mean on a 2014-2014 Cadillac SRX?
U0005 stands for "High Speed CAN Communication Bus (+) High". The CAN High wire voltage is higher than expected, indicating a short to battery voltage.
What are the symptoms of U0005 on a Cadillac SRX?
Common symptoms of U0005 include: CAN bus communication failure, Multiple module faults, Warning lights on.
What causes U0005 on a 2014-2014 Cadillac SRX?
Common causes of U0005 include: CAN H wire shorted to battery power, Wiring harness damage, Module internal fault driving CAN H high.
Last updated: March 2026