NetworkU1DD1
SeriousSeverity: Serious - have it checked soon
No description available
Key terms: Control module: a small computer that runs one part of the car
1What it means in plain English
Control modules in the car cannot communicate with each other over the vehicle network.
2Common causes
- Wiring or connector fault on the communication bus
- Faulty control module
- Low battery voltage or poor ground
- Water ingress in a connector or module
- Aftermarket device interfering with the bus
3Can I drive?
Serious · drive with care
The car may run normally or may not run at all. If the module that has lost communication controls steering, brakes, park brake, charging or engine cooling, drive only if those systems feel normal; stop safely if the steering becomes heavy, a brake warning appears, or the engine temperature climbs. If the car will not start or runs badly, have it towed.
This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.
4Brand data 1
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | U1DD1 | No description available | Network |
Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.
5Extended variant codes 51
These 7-character codes are manufacturer-specific variants of U1DD1 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | U1DD100 | No description available | Network |
| Mercedes-Benz | U1DD101 | Insufficient number of cell voltage measurements available Brand | Network |
| Mercedes-Benz | U1DD102 | Cell voltage measurement short to GND Brand | Network |
| Mercedes-Benz | U1DD103 | Cell voltage measurement short to Bat Brand | Network |
| Mercedes-Benz | U1DD105 | Cell voltage measurement implausible (plausibility error) Brand | Network |
| Mercedes-Benz | U1DD106 | Cell voltage limit was violated longer than max. allowed time Brand | Network |
| Mercedes-Benz | U1DD107 | Cell over voltage detected Brand | Network |
| Mercedes-Benz | U1DD108 | Cell undervoltage detected Brand | Network |
| Mercedes-Benz | U1DD116 | CAN timeout Brand | Network |
| Mercedes-Benz | U1DD117 | Signal out of range Brand | Network |
| Mercedes-Benz | U1DD118 | E2E error Brand | Network |
| Mercedes-Benz | U1DD119 | Battery current out of range high Brand | Network |
| Mercedes-Benz | U1DD120 | Battery current out of range low Brand | Network |
| Mercedes-Benz | U1DD121 | Battery temperature sensor line open circuit Brand | Network |
| Mercedes-Benz | U1DD128 | Range of development fault memory The signal offset is outside the permissible range. Brand | Network |
| Mercedes-Benz | U1DD129 | Range of development fault memory There is an invalid signal. Brand | Network |
| Mercedes-Benz | U1DD130 | Range of development fault memory Brand | Network |
| Mercedes-Benz | U1DD131 | Range of development fault memory The signal is not present. Brand | Network |
| Mercedes-Benz | U1DD132 | Cell Voltage over Emergency level Brand | Network |
| Mercedes-Benz | U1DD133 | CellVoltage over Critical level Brand | Network |
| Mercedes-Benz | U1DD134 | Cell Voltage over Operating level Brand | Network |
| Mercedes-Benz | U1DD137 | Range of development fault memory The signal frequency is too high. Brand | Network |
| Mercedes-Benz | U1DD138 | Range of development fault memory There is an incorrect signal frequency. Brand | Network |
| Mercedes-Benz | U1DD139 | Range of development fault memory The signal has too few pulses. Brand | Network |
| Mercedes-Benz | U1DD140 | Range of development fault memory Brand | Network |
| Mercedes-Benz | U1DD141 | battery has a thermal propagation detected fault Brand | Network |
| Mercedes-Benz | U1DD142 | Cell Temperature Emergency High Brand | Network |
| Mercedes-Benz | U1DD143 | Cell Temperature greater than the threshold 75 C Brand | Network |
| Mercedes-Benz | U1DD144 | Cell Temperature Operating High Brand | Network |
| Mercedes-Benz | U1DD145 | Range of development fault memory There is an error in the program memory. Brand | Network |
| Mercedes-Benz | U1DD146 | Range of development fault memory There is an error in the calibration or parameterization memory. Brand | Network |
| Mercedes-Benz | U1DD147 | Range of development fault memory There is a runtime error. Brand | Network |
| Mercedes-Benz | U1DD148 | Range of development fault memory There is an error in the control memory. Brand | Network |
| Mercedes-Benz | U1DD149 | Range of development fault memory There is an internal electrical fault. Brand | Network |
| Mercedes-Benz | U1DD150 | Range of development fault memory Brand | Network |
| Mercedes-Benz | U1DD151 | Range of development fault memory The component is not programmed. Brand | Network |
| Mercedes-Benz | U1DD152 | Range of development fault memory The component has not been put into operation. Brand | Network |
| Mercedes-Benz | U1DD153 | Range of development fault memory The component is deactivated. Brand | Network |
| Mercedes-Benz | U1DD154 | Range of development fault memory Calibration is missing. Brand | Network |
| Mercedes-Benz | U1DD155 | Range of development fault memory The component is not configured. Brand | Network |
| Mercedes-Benz | U1DD156 | Range of development fault memory An incorrect or incompatible configuration was detected. Brand | Network |
| Mercedes-Benz | U1DD157 | Range of development fault memory Incorrect or incompatible software modules were detected. Brand | Network |
| Mercedes-Benz | U1DD158 | Range of development fault memory Brand | Network |
| Mercedes-Benz | U1DD159 | Range of development fault memory Brand | Network |
| Mercedes-Benz | U1DD160 | Range of development fault memory Brand | Network |
| Mercedes-Benz | U1DD185 | Cicruit Breaker Control Error - ADuC CB Off Brand | Network |
| Mercedes-Benz | U1DD186 | Circuit Breaker Damaged - Stuck Open Warning Brand | Network |
| Mercedes-Benz | U1DD187 | Circuit Breaker Damaged - Stuck Close Brand | Network |
| Mercedes-Benz | U1DD188 | CCB is aged Brand | Network |
| Mercedes-Benz | U1DD198 | Range of development fault memory The component or the system has overtemperature. Brand | Network |
| Mercedes-Benz | U1DD199 | Range of development fault memory Brand | Network |
6Related codes
Browse Uxxx codes or U1DDxx codes.