Battery Energy Control Module: fault codes
All 198 fault codes of the Porsche Taycan Battery Energy Control Module with the manufacturer's names. How to read and clear them with STEUER14.
| Code | Fault |
|---|---|
| B17D900 | Control unit faulty |
| B1A7BF0 | Control unit faulty |
| B1BE9F0 | Crash signal monitoring, failed |
| B1D8B01 | Pressure equalizer, temperature sensor, electrical fault |
| B1D8B11 | Pressure equalizer, temperature sensor, electrical fault |
| B1D8B12 | Pressure equalizer, temperature sensor, electrical fault |
| B1D8B22 | Pressure equalizer, temperature sensor, electrical fault |
| B1D8B86 | Pressure equalizer, temperature sensor, electrical fault |
| B1D8BF1 | Pressure equalizer, temperature sensor, electrical fault |
| B1D8DF0 | MINUS contactor, end of life reached |
| B1D8EF0 | PLUS contactor, end of life reached |
| B1D8EF1 | High-voltage battery, pressure sensor, electrical fault |
| B1D9EF0 | Cell module 1, aging detected |
| B1D9EF1 | Cell module 2, aging detected |
| B1D9EF2 | Cell module 3, aging detected |
| B1D9EF3 | Cell module 4, aging detected |
| B1D9EF4 | Cell module 5, aging detected |
| B1D9EF5 | Cell module 6, aging detected |
| B1D9EF6 | Cell module 7, aging detected |
| B1D9EF7 | Cell module 8, aging detected |
| B1D9EF8 | Cell module 9, aging detected |
| B1D9EF9 | Cell module 10, aging detected |
| B1D9EFA | Cell module 11, aging detected |
| B1D9EFB | Cell module 12, aging detected |
| B1D9EFC | Cell module 13, aging detected |
| B1D9EFD | Cell module 14, aging detected |
| B1D9EFE | Cell module 15, aging detected |
| B1D9EFF | Cell module 16, aging detected |
| B1D9FF0 | Cell module 17, aging detected |
| B1D9FF1 | Cell module 18, aging detected |
| B1D9FF2 | Cell module 19, aging detected |
| B1D9FF3 | Cell module 20, aging detected |
| B1D9FF4 | Cell module 21, aging detected |
| B1D9FF5 | Cell module 22, aging detected |
| B1D9FF6 | Cell module 23, aging detected |
| B1D9FF7 | Cell module 24, aging detected |
| B1D9FF8 | Cell module 25, aging detected |
| B1D9FF9 | Cell module 26, aging detected |
| B1D9FFA | Cell module 27, aging detected |
| B1D9FFB | Cell module 28, aging detected |
| B1D9FFC | Cell module 29, aging detected |
| B1D9FFD | Cell module 30, aging detected |
| B1D9FFE | Cell module 31, aging detected |
| B1D9FFF | Cell module 32, aging detected |
| B1DA0F0 | Cell module 33, aging detected |
| B1DA0F3 | Charging current too low |
| B1DA0F4 | Track mode locked |
| B1E1301 | Additional coolant pump for low-temperature circuit (P2), electrical error |
| B1E1429 | High-voltage battery, pressure sensor, electrical fault |
| B1E14F0 | High-voltage battery, pressure sensor, electrical fault |
| B1E14F1 | High-voltage battery, pressure sensor, electrical fault |
| B1E14F2 | High-voltage battery, pressure sensor, electrical fault |
| B200400 | Control unit defective |
| B200500 | Coding |
| B201200 | Coding |
| B201500 | Production mode active |
| C109400 | Busbars - temperature measurement implausible |
| C109421 | Busbar, temperature – below limit value |
| C109422 | Busbar, temperature – above limit value |
| P056000 | Terminal 30 power supply – signal implausible |
| P056200 | Supply voltage - voltage too low |
| P056300 | Supply voltage too high |
| P060100 | Function restriction |
| P060400 | Control unit - function restriction |
| P060600 | Control unit defective |
| P062F00 | Function restriction |
| P064F00 | Coding |
| P066600 | Busbar PLUS rear axle - temperature too high |
| P066700 | Busbar PLUS rear axle, temperature sensor - signal implausible |
| P06AB00 | Busbar MINUS, temperature sensor - short circuit to B+ |
| P06AC00 | Busbar MINUS, temperature sensor - signal implausible |
| P0A0A00 | High Voltage System Inter-Lock Circuit |
| P0A0C00 | High Voltage System Interlock Circuit Low |
| P0A0D00 | High Voltage System Interlock Circuit High |
| P0A1F00 | Terminal 30 power supply – signal implausible |
| P0A7F00 | Hybrid/EV Battery Pack Deterioration |
| P0A9500 | High Voltage Fuse |
| P0A9C00 | Hybrid Battery Temperature Sensor "A" Circuit Range/Performance |
| P0A9D00 | Temperature sensor 1 for hybrid/high-voltage battery - short circuit to ground |
| P0A9E00 | Temperature sensor 1 for hybrid/high-voltage battery - short circuit to B+ |
| P0AA100 | Hybrid/EV Battery Positive Contactor Circuit, Stuck Closed |
| P0AA200 | Hybrid/EV Battery Positive Contactor Circuit, Stuck Open |
| P0AA400 | Hybrid/EV Battery Negative Contactor Circuit Stuck Closed |
| P0AA500 | Hybrid/EV Battery Negative Contactor Circuit Stuck Open |
| P0AA600 | Hybrid/EV Battery Voltage System Isolation Fault |
| P0ABA00 | Hybrid/high-voltage battery total voltage 1 – limit value violated |
| P0ABB00 | Hybrid/EV Battery Pack Voltage Sense "A" Circuit, Range/Performance |
| P0AC000 | Hybrid/EV Battery Pack Current Sensor "A" Circuit, Range/Performance |
| P0AC100 | Hybrid/EV Battery Pack Current Sensor "A", Circuit Low |
| P0AC200 | Hybrid/EV Battery Pack Current Sensor "A", Circuit High |
| P0AD900 | Hybrid/EV Battery Positive Contactor Control Circuit/Open |
| P0ADB00 | Activation of hybrid/high-voltage battery positive contact – short circuit to ground |
| P0ADC00 | Activation of hybrid/high-voltage battery positive contact, short circuit to B+ |
| P0ADD00 | Hybrid/EV Battery Negative Contactor Control Circuit/Open |
| P0ADF00 | Activation of hybrid/high-voltage battery negative contact, short circuit to ground |
| P0AE000 | Activation of hybrid/high-voltage battery negative contact, short circuit to B+ |
| P0AE200 | Pre-charging contacts of hybrid/high-voltage battery – stuck closed |
| P0AE300 | Hybrid/EV Battery Precharge Contactor Circuit, Stuck Open |
| P0AE400 | Hybrid/EV Battery Precharge Contactor Control Circuit |
| P0AE600 | Hybrid/EV Battery Precharge Contactor Control Circuit Low |
| P0AE700 | Hybrid/EV Battery Precharge Contactor Control Circuit High |
| P0AF800 | Backup battery, voltage fault |
| P0AFA00 | High-voltage system - voltage too low |
| P0AFB00 | High-voltage system - voltage too high |
| P0B0F00 | Hybrid/EV Battery Pack Current Sensor "B" Circuit, Range/Performance |
| P0B1000 | Current measurement sensor 2 for hybrid/high-voltage battery - short circuit to ground |
| P0B1100 | Hybrid/EV Battery Pack Current Sensor "B" Circuit High |
| P0B1300 | Hybrid/EV Battery Pack Current Sensor "A"/"B" Correlation |
| P0B1500 | Hybrid/EV Battery Pack Voltage Sense "B" Circuit, Range/Performance |
| P0B1600 | Hybrid/EV Battery Pack Voltage Sense "B" Circuit Low |
| P0B1700 | Hybrid/EV Battery Pack Voltage Sense "B" Circuit High |
| P0B1A00 | Hybrid/EV Battery Pack Voltage Sense "C" Circuit, Range/Performance |
| P0B1B00 | Hybrid/EV Battery Pack Voltage Sense "C" Circuit Low |
| P0B1C00 | Hybrid/EV Battery Pack Voltage Sense "C" Circuit High |
| P0B3300 | High-voltage battery voltage supply – below limit value |
| P0B3400 | High Voltage Service Disconnect Circuit, Performance |
| P0B3500 | High Voltage Service Disconnect Circuit Low |
| P0B3600 | High Voltage Service Disconnect Circuit High |
| P0B3700 | High Voltage Service Disconnect Open |
| P0B3C00 | Hybrid/EV Battery Voltage Sense "A" Circuit, Range/Performance |
| P0B3D00 | Hybrid/high-voltage battery voltage, sensor line 1, short circuit to ground |
| P0B3E00 | Hybrid/high-voltage battery voltage, sensor line 1, short circuit to B+ |
| P0BBD00 | Hybrid Battery Pack Voltage Variation Exceeded Limit |
| P0C4300 | Temperature sensor for low-temperature circuit (TME: TW7 / BMS: HV battery input) – signal implausible |
| P0C4400 | Temperature sensor for low-temperature circuit (TME: TW7 / BMS: HV battery input), short circuit to ground |
| P0C4500 | Temperature sensor for low-temperature circuit (TME: TW7 / BMS: HV battery input), short circuit to B+ |
| P0C4700 | Additional coolant pump in low-temperature circuit (P2) – no communication |
| P0C4800 | Additional coolant pump in low-temperature circuit (P2) – PWM signal, short circuit to ground |
| P0C4900 | Additional coolant pump in low-temperature circuit (P2) – PWM signal, short circuit to B+ |
| P0C4A00 | Auxiliary coolant pump in the low-temperature circuit (P2) – error |
| P0C4C00 | Additional coolant pump in low-temperature circuit (P2) – short circuit to ground |
| P0C4D00 | Additional coolant pump in low-temperature circuit (P2) – short circuit to B+ |
| P0C7800 | Hybrid/EV Battery System, Precharge Time Too Long |
| P0CA600 | High-voltage battery – charging current too high |
| P0CA700 | Hybrid Battery Discharging Current High |
| P0CD600 | Temperature sensor for low-temperature circuit (TME: TW8 / BMS: HV battery output) – signal implausible |
| P0CD700 | Temperature sensor for low-temperature circuit (TME: TW8 / BMS: HV battery output), short circuit to ground |
| P0CD800 | Temperature sensor for low-temperature circuit (TME: TW8 / BMS: HV battery output), short circuit to B+ |
| P0CDF00 | Coolant valve 1 for hybrid/high-voltage battery – electrical fault |
| P0CFF00 | Additional coolant pump in low-temperature circuit (P2) – stuck |
| P0DAB00 | SPI bus - no communication |
| P0DAC00 | Hybrid/EV Battery Cell Balancing Circuit "A" |
| P0DAF00 | Hybrid/EV Battery Cell Balancing Circuit "A" Range/Performance |
| P0E2F00 | High Voltage Fuse "B" |
| P0E3000 | High Voltage Fuse "C" |
| P0E7400 | Hybrid/EV Battery Voltage Internal Isolation Fault |
| P151A00 | Control module, incorrect code |
| P160900 | Crash switch-off was triggered |
| P168A00 | Reversible crash shut-off was triggered |
| P1A0100 | Crash signal monitoring, failed |
| P1A3700 | Cell module control unit – implausible overvoltage |
| P1B1500 | Hybrid battery precharge resistance, Excess temp. |
| P1B1600 | Charging hybrid battery, No external charge detected |
| P1B1B00 | Control unit – function restriction |
| P1B3D00 | Control unit – Function limitation |
| P1CA800 | Crash signal monitoring, failed |
| P1D0100 | Warning: Capacity jump |
| P1D5400 | Contactor – current draw implausible |
| P1D5500 | Current detection defective |
| P1D5700 | High voltage battery, cell voltage difference too high |
| P1D5800 | Number of cell modules implausible |
| P1D5900 | Current/voltage sensor defective |
| P1D5A00 | Current/voltage sensor defective |
| P1D5B00 | Current/voltage sensor defective |
| P1D5C00 | Current/voltage sensor defective |
| P1D5D00 | Current/voltage sensor defective |
| P1D5E00 | Current/voltage sensor defective |
| P1D5F00 | Cell module, state of charge – above limit value |
| P1D6000 | Temperature sensor 1 for hybrid/high-voltage battery – above limit value |
| P1D6100 | Temperature sensor 1 for hybrid/high-voltage battery – below limit value |
| P1D6200 | Cell module – temperature measurement defective |
| P1D6300 | Temperature sensor for low-temperature circuit (TME: TW7 / BMS: HV battery input) – above limit value |
| P1D6400 | Coolant outlet temperature, electrical fault |
| P1D6500 | Cell module, state of charge – below limit value |
| P1D6900 | High-voltage battery, total voltage of cells – implausible |
| P262B00 | Control Module Power Off Timer Performance |
| P29FF00 | Thermal outlier detected |
| P2B2800 | Additional coolant pump in low-temperature circuit (P2) – open circuit |
| P31C500 | Reduced performance due to excessive coolant temperature |
| U002800 | Hybrid CAN bus – faulty |
| U002900 | Hybrid CAN bus - no communication |
| U033700 | Software Incompatibility with Battery Charger Control Module |
| U033A00 | Software Incompatibility With Hybrid/EV, Battery Interface Control Module "A" |
| U110000 | Component protection – not taught |
| U110100 | Component protection active |
| U110300 | Production mode active |
| U110E00 | Coding |
| U111400 | Component protection – authentication failed (GFA) |
| U112100 | Data bus - missing message |
| U112200 | Data bus - implausible message |
| U112300 | Data bus – fault value received |
| U113A00 | Charging device for high voltage battery, implausible message |
| U13E300 | CONCLUSION Identification, implausible |
| U140000 | Function restriction – supply voltage too low |
| U140100 | Function restriction – supply voltage too high |
| U178000 | Current/voltage sensor defective |
| U178100 | High voltage battery, sensor for current measurement, signal implausible |
| U300000 | Relay for thermal management components (SR6.2) – short circuit to ground |
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.