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DC/DC Converter: fault codes

All 200 fault codes of the Porsche Taycan DC/DC Converter with the manufacturer's names. How to read and clear them with STEUER14.

CodeFault
B184C00Release active
B1883FBFunction restriction, due to excess voltage at terminal 30 charge cable
B193D11Control unit – Function limitation
B193D12Control unit – Function limitation
B193D21Control unit – function restriction
B193D22Control unit – Function limitation
B1A7E00Emergency shut-down
B1A8501High-voltage output voltage sensor, Electrical malfunction
B1B7421High-voltage voltage converter, voltage sensor, below minimum
B200000Control unit – function restriction
B200100Control unit – wrong software version
B200500Coding
B201200Coding
B201800Authentication of a function, failed
B201C21Supply voltage, above maximum
B201C22Supply voltage, below minimum
B2F0100Development code 1
C10A700Rolling test mode active
C10EE00Rolling test mode - fault
C113AF4HV voltage converter, internal temperature sensor – implausible signal
C113AF5HV voltage converter – control unit defective
C113AF6HV voltage converter, control unit – communication error
C113AF7HV voltage converter, internal voltage sensor – implausible signal
C113AFCHV voltage converter, internal current sensor – implausible signal
C114101Terminal 30 – defective
C11C5F0High-voltage syst., Locking after crash active
C136BF2High-voltage voltage converter - below voltage limit (400 V)
C136BF3High-voltage voltage converter - above voltage limit (400 V)
C136BF5High-voltage voltage converter - above current limit (800 V)
C136BF6High-voltage voltage converter - below voltage limit (800 V)
C136BFAHigh-voltage voltage converter - function restriction due to undervoltage (12 V)
C136BFBHigh-voltage voltage converter - function restriction due to overvoltage (12 V)
C136BFDHigh-voltage voltage converter - above power limit (12 V)
C136BFEHigh-voltage voltage converter - below voltage limit (12 V)
C136BFFHigh-voltage voltage converter - above voltage limit (12 V)
C1380F0High-voltage voltage converter - switch-off path test failed
C1380F1High-voltage voltage converter - switch-off path test failed (notice)
C1380F2High-voltage voltage converter - shutdown due to overtemperature
C1380F3High-voltage voltage converter - power reduction due to overtemperature
C1380F4High-voltage voltage converter - temperature sensor defective
C1380F5High-voltage voltage converter - voltage monitoring error (12 V)
C1380F6High-voltage voltage converter - malfunction
C1380F7High-voltage voltage converter - above power limit (48 V)
C1380F8High-voltage voltage converter - above voltage limit (48 V)
C1380F9High-voltage voltage converter - above current limit (48 V)
C1380FAHigh-voltage voltage converter - below voltage limit (48 V)
C1380FBHigh-voltage voltage converter - calibration implausible
C1380FCHigh-voltage voltage converter - unknown software/hardware combination
C1380FDHigh-voltage voltage converter - function restriction (48 V part)
C1380FEHigh-voltage voltage converter - above current limit (400 V)
C1380FFHigh-voltage voltage converter - above power limit (400 V)
C1381F0High-voltage voltage converter - function restriction due to overvoltage (800 V)
C1381F1High-voltage voltage converter - function restriction due to undervoltage (800 V)
C1381F2High-voltage voltage converter - function restriction due to undervoltage (400 V)
C139549Control unit – Function limitation
C13F621High-voltage voltage converter, supply voltage sensor, below minimum
C13F622Control unit – function restriction
C145001Control unit – function restriction
C145021Control unit – function restriction
C145022Control unit – function restriction
C145101Control unit – function restriction
C145111Control unit – Function limitation
C145112Control unit – Function limitation
C145117Control unit – Function limitation
C145121Control unit – Function limitation
C145122Control unit – Function limitation
C145201Control unit – function restriction
C145217Control unit – Function limitation
C145221Control unit – function restriction
C145222Control unit – function restriction
C145311Control unit – Function limitation
C145312Control unit – Function limitation
C145321Control unit – function restriction
C145322Control unit – function restriction
C145329Control unit – Function limitation
C1453F0Control unit – Function limitation
C1453F1Control unit – Function limitation
C1453F2Control unit – Function limitation
C145401Control unit – function restriction
C145421Control unit – Function limitation
C145422Control unit – Function limitation
C145521Control unit – function restriction
C145522Control unit – function restriction
C1455F0Control unit – Function limitation
C145601Control unit – function restriction
C145617High-voltage converter - malfunction
C145621Control unit – Function limitation
C145622Control unit – Function limitation
C145811Control unit – function restriction
C145812Control unit – function restriction
C145821Control unit – function restriction
C145822Control unit – function restriction
C1458F0Control unit – Function limitation
C145A01Terminal 30 – defective
P060200Programming
P060400Control unit - function restriction
P060500Control unit - function restriction
P062F00Function restriction
P064F00Coding
P068500Main relay, control line - open circuit
P068B00ECM/PCM Power Relay De-Energized Performance - Too Late
P0A0E00High-voltage system, pilot line – open circuit
P0A9400Function limitation
P0B3700High Voltage Service Disconnect Open
P0C3A00Control unit – Function limitation
P0C3B00Control unit – Function limitation
P0C3F00Control unit – Function limitation
P0C4000Control unit – Function limitation
P0E3200Internal voltage sensor 1 – signal implausible
P0E3300Internal voltage sensor 2 – signal implausible
P0E3400Internal voltage sensor 2 – signal implausible
P0E3600High-voltage voltage converter, voltage sensor, below minimum
P0E3700Internal voltage sensor 2 – signal implausible
P0E3800Internal voltage sensor 2 – signal implausible
P0E3900Internal voltage sensor 2 – signal implausible
P0E5300DC/DC converter current sensor - short circuit to ground
P0E5400DC/DC converter current sensor, short circuit to B+
P0E9700High-voltage voltage converter, voltage sensor, below minimum
P0E9800High-voltage voltage converter, voltage sensor, below minimum
P0E9900High-voltage voltage converter, voltage sensor, below minimum
P0E9D00DC/DC converter current sensor 2 - short circuit to ground
P0E9E00DC/DC converter, current sensor 2 - short circuit to B+
P0EA300Control unit – function restriction
P178E00Compressor for level control, Temperature too high
P1B3D00Control unit – Function limitation
P1CC400Control unit - function restriction
P1D7E00Terminal 30 – defective
P1D8100Internal voltage sensor 1 – signal implausible
P1D8200Internal voltage sensor 1 – signal implausible
P1D8300Internal voltage sensor 1 – signal implausible
P1D8400Internal voltage sensor 1 – signal implausible
P1DF700Control unit – Function limitation
P1DF800Control unit – Function limitation
P1DF900Control unit – Function limitation
P1E0E00Internal voltage sensor 1 – signal implausible
P1EF200Control unit – Function limitation
P1EF300Control unit – function restriction
P1EF400Control unit – function restriction
P1FD300Terminal 30 – defective
P1FD400Terminal 30 – defective
P1FEF00Control unit – function restriction
P1FF000Control unit – function restriction
P1FF600Internal voltage sensor 2 – signal implausible
P1FF700Internal voltage sensor 2 – signal implausible
P1FF800Control unit – function restriction
P1FF900Control unit – function restriction
P1FFC00Control unit – function restriction
P1FFD00Control unit – function restriction
P1FFE00Internal voltage sensor 1 – signal implausible
P326C00Terminal 30 – defective
P32A100Control unit – Function limitation
P32A800HV voltage converter - function limitation due to undervoltage (12 V)
P32AD00HV voltage converter - function limitation due to undervoltage (12 V)
P32B200High-voltage voltage converter, voltage sensor, below minimum
P32B300Control unit – Function limitation
U002800Hybrid CAN bus – faulty
U002900Hybrid CAN bus - no communication
U101100Supply voltage – too low
U101200Supply voltage – too high
U110000Component protection – not taught
U110100Component protection active
U110300Production mode active
U111400Component protection – authentication failed (GFA)
U111500Component protection – not taught (SHE)
U112100Data bus - missing message
U112200Data bus - implausible message
U112300Data bus – fault value received
U11BB00Ethernet databus branch 1, Electrical error
U11BC00Ethernet databus branch 2, Electrical error
U122C00Ethernet databus branch 1, No communication
U122D00Ethernet databus branch 2, No communication
U12C800MAC address conflict in Ethernet switch branch 1
U12C900MAC address conflict in Ethernet switch branch 2
U12CA00MAC address conflict in Ethernet switch branch 3
U12CB00MAC address conflict in Ethernet switch branch 4
U12D000IPv6 address conflict
U138F00Clock synchronization failure
U139000Clock synchronization master, branch 1, invalid number
U139100Clock synchronization master, branch 2, invalid number
U13E300CONCLUSION Identification, implausible
U140000Function restriction – supply voltage too low
U140100Function restriction – supply voltage too high
U140800Internal voltage measurement, Implausible signal
U14D200Function restriction, crash signal
U174800Control unit – function restriction
U174900Control unit – function restriction
U174A00Control unit – function restriction
U174B00Control unit – function restriction
U1A3300Control unit – Function limitation
U1A5600HV voltage converter - malfunction
U1A6000Control unit – function restriction
U1A6100Control unit – Function limitation
U1A6200Control unit – function restriction
U1A6300Control unit – function restriction
U1A6400Control unit – Function limitation
U1A6500High-voltage converter - malfunction
U1A6600High-voltage converter - malfunction
U1A6700High-voltage converter - malfunction
U1A6800High-voltage converter - malfunction
U300100Control unit – run-on fault

Fault names come from the manufacturer's diagnostic data. STEUER14 is independent and not affiliated with Porsche AG. A code tells you what a control unit detected, not always which part failed — check wiring, supply voltage and related codes before replacing parts. STEUER14 shows each fault's full description, status and freeze frame on the car.