U0022moderate severityNetwork
Control Module Communication Bus B Shorted To Bus B High
on 2017 Audi S5 3.0L Supercharged V6 · AWD
What this code means
The bus B low line is shorted to the bus B high line, corrupting data traffic. Modules lose communication.
Symptoms
- Communication faults
- Warning lamps on
- Module function loss
Common causes
- Short between bus B wires
- Chafed harness
- Faulty control module
- Damaged connector
Diagnostic steps
- Scan for stored codes
- Test resistance between bus wires
- Inspect harness
- Test modules individually
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Other Network codes on this vehicle
00003
Control Module - Defective
01304
Radio - No Communication
01312
Powertrain Data Bus - Defective
01314
Engine Control Module (ECM) - no communications
01315
Transmission Control Module (TCM) - No Communication
01316
ABS Control Module - No Communication
01317
Instrument Cluster Control Module (J285) - No Communication
01318
Immobilizer Control Module - No Communication
01321
Airbag Control Module - No Communication
U0001
High Speed CAN Communication Bus