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Home/DTC Codes/Chevrolet/Spark EV/2014-2016 Electric Motor/U0007
U0007

High Speed CAN Communication Bus (-) Low

2014-2016 Chevrolet Spark EV Electric Motor

High SeverityNetworkGeneric (SAE)

Description

The CAN Low wire voltage is lower than expected, indicating a short to ground.

Symptoms

  • Bus communication degraded
  • Multiple DTCs stored
  • Intermittent module dropouts

Common Causes

  • CAN L shorted to ground
  • Damaged wiring insulation
  • Module fault pulling CAN L low
  • Water damage

Diagnostic Steps

  1. Measure CAN L voltage
  2. Isolate modules to find fault source
  3. Inspect wiring for ground contact
  4. Check for water intrusion

Repair Notes

Repair the CAN L short to ground. Check for damaged wire insulation near metal brackets.

Related Codes

U0001High Speed CAN Communication BusU0006High Speed CAN Communication Bus (-) OpenU0008High Speed CAN Communication Bus (-) High

Other Network Codes

U0007 on Other Vehicles

Chevrolet Astro

1995-2005 4.3L V6 Vortec

Chevrolet Avalanche

2002-2006 5.3L V8 Vortec

Chevrolet Avalanche

2002-2006 8.1L V8 Vortec

Chevrolet Avalanche

2007-2013 5.3L V8 Vortec

Chevrolet Avalanche

2007-2013 6.0L V8 Vortec

Chevrolet Aveo

2012-2018 1.6L I4

Chevrolet Beat

2018-2021 1.2L I4

Chevrolet Beretta

1990-1996 2.2L I4

Common Questions

What does code U0007 mean on a 2014-2016 Chevrolet Spark EV?

U0007 stands for "High Speed CAN Communication Bus (-) Low". The CAN Low wire voltage is lower than expected, indicating a short to ground.

What are the symptoms of U0007 on a Chevrolet Spark EV?

Common symptoms of U0007 include: Bus communication degraded, Multiple DTCs stored, Intermittent module dropouts.

What causes U0007 on a 2014-2016 Chevrolet Spark EV?

Common causes of U0007 include: CAN L shorted to ground, Damaged wiring insulation, Module fault pulling CAN L low, Water damage.

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