Fault code lookup

Mercedes-Benz fault codes

20,291 codes · 1,724 vehicle records · 258 ECU records · 56,350 live-data parameters

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Codes 20,291

CodeDescriptionBrandsSystem
U3F9500General ASIC error. At least one Ls-Side report bit ASIC ERR bit set in error register1Network
U3F9600General ASIC error. At least one Hs-Side report bit ASIC ERR bit set in error register1Network
U3F9A00Timeout error for CAN message CPC_ENERGY_GW_Container1_ST3_CPC_PT4_SubNWs_GW_SigR1_ST3 (CPC Signal routings to PT Sub Networks)1Network
U3F9B00Timeout error for CAN message CPC_ENERGY_GW_Container1_ST3_DIAG_Stat_ST3 (Actv Line state Tester pres)1Network
U3F9C00Timeout error for CAN message CPC_ENERGY_GW_Container1_ST3_PN14_Master_Stat1_ST3 (Powernetwork 12V master state)1Network
U3F9D00Timeout error for CAN message CPC_ENERGY_GW_Container1_ST3_PT4_EngCoor_OBD2_ST3 (PT4 engine Coor OBD2 ST3)1Network
U3F9E00plausibilisation of T15-signal1Network
U3F9F00heater current diagnosis1Network
U3FA600Diagnosis of short to ground (out of low range) of temperature signal(s) which is located between master path 48V side S9 and slave path 48V side S91Network
U3FA700Diagnosis of short to battery (out of high range) of temperature signal(s) which is located between master path LV side S9 and slave path LV side S91Network
U3FB000Diagnosis of current control in forward mode1Network
U3FB300coolant intake rotor temperature short circuit to ground1Network
U3FB400coolant intake rotor temperature during short circuit to battery detected1Network
U3FCA00UART communication failure during Electric machine capacitance status monitoring.1Network
U3FCD00Check of Hw signal for reporting, that emergency supply for the ECU is available1Network
U3FCF00Dlc Error DFC for the frame ZEVOBDCoor_ST31Network
U3FD700Frequency monitoring of latency fault check Vdd5v Mon (BIST9) over all Asics1Network
U3FD800frequency monitoring of latency fault check VDS external circuit (BIST10) over all Hs Asics1Network
U3FDB00Secondary supply voltage under/overvoltage error at LDO_VCC of the HighSide ASICs. At least one HighSide ASIC report either LDO_VCC_UV/OV_ERR bit in error register1Network
U3FDF00Rotor position Cos or Sin signal out of range detected in the monitoring SW1Network
U3FE800Coolant temperature plausibility check1Network
U3FF500Coolant temperature is plausible1Network
U3FFF10Invalid Certificate Chain.1Network
U3FFF12No description available2Network
U3FFFEBNo description available1Network
U3FFFFEService: For Service not relevant: DTC_DET_ReportError or SMM_OneRequestsInit1Network
U3FFFFFNo description available1Network
U4242No description available3Network
U5015Multifunction steering wheel button group, signal3Network
U5033Engine diagnosis indicator lamp, actuation3Network
U5066Instrument cluster, message3Network
U5183Brake lights, request3Network
U5210Synchronization, signal3Network
U5242No description available3Network
U5362Parking brake, status3Network
U6242No description available3Network
U7683No description available3Network
U7746No description available3Network
U7763No description available3Network
UBFA1No description available2Network
UBFA2No description available2Network

Some brand data is extracted from diagnostic files and may contain manufacturer-specific wording. General SAE J2012 descriptions are used where available.

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