U0404moderate severityNetwork
Invalid Data Received from Gear Shift Module
on 2007 Audi S6 5.2L V10 · AWD
What this code means
The data received from the gear shift position module is invalid or not within expected range.
Symptoms
- Incorrect gear display
- Shifter position not recognized
- Transmission defaulting to safe mode
- Cannot select some gears
Common causes
- Gear shift sensor fault
- Wiring issue to shift module
- Shift module calibration lost
- CAN bus noise
Diagnostic steps
- Check gear shift module for codes
- Test shift position sensor outputs
- Check CAN bus wiring to shift module
- Recalibrate shift module
- Inspect shift mechanism
Repair notes
Recalibrate or replace gear shift module. Check wiring to shifter assembly.
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Other Network codes on this vehicle
00003
Control Module - Defective
01304
Radio - No Communication
01312
Powertrain Data Bus - Defective
01314
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01315
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01316
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01317
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01318
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01321
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U0001
High Speed CAN Communication Bus