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OBD-II Diagnostic Trouble Code
P1D56

Internal Control Module Cpu Undervoltage Error

P
Powertrain
engine / trans
1
Mfr
manufacturer code
D
Powertrain subsystem
56
Internal Control Module Cpu Undervoltage Error
Severity · general guide
Moderate
Fix soon — usually won't strand you
Code type
Generic
System
Powertrain