Network
generic / SAE
U0557
Invalid Data Received From Front Controls Interface Module A
A receiving module detected implausible data from front controls interface module A. Hard-key, rotary knob or steering-wheel switch state values fail plausibility checks and are rejected.
SystemNetwork
Typegeneric / SAE
GroupU0
Range / number5 / 57
Possible causes
- Module internal fault or sensor input drift high
- Software version mismatch after replacement medium
- Gateway module routing CAN messages incorrectly low
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 120–1200 €
- Estimated time: 0.5–3 h
- Component: front controls interface module a
- drive cycle required
Sources
References
sae:J2012