U0220high severityNetwork
Lost Communication With Zone Module A
on 2012 Ford Focus 2.0L I4 GDI · FWD
What this code means
The network has lost communication with zone module A, which controls a group of electrical functions. Multiple systems in that zone may stop working.
Symptoms
- Several functions inoperative
- Multiple warning lights
- Erratic electrical behavior
Common causes
- Faulty zone module A
- Wiring or connector damage
- Module power or ground loss
- Blown fuse
Diagnostic steps
- Scan all modules for codes
- Check zone module power and ground
- Inspect harness and connectors
- Test CAN bus at module
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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