NetworkU0442
SeriousSeverity: Serious - have it checked soon
Invalid data received from ECM/PCM B
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?
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 23
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | U0442 | Injector 5 Brand | Network |
| BAIC Motor | U0442 | Invalid Data Received From ECM/PCM B Brand | Network |
| Mercedes-Benz | U0442 | No description available | Network |
| BYD | U0442 | Invalid Data Received From ECM/PCM B Brand | Network |
| Chery | U0442 | CAN message critical signal invalid Brand | Network |
| Daewoo | U0442 | Invalid Data Received From ECM/PCM B Brand | Network |
| DFFS | U0442 | Invalid Data Received From ECM/PCM B Brand | Network |
| DFFX | U0442 | Invalid Data Received From ECM/PCM B Brand | Network |
| DFXK | U0442 | Invalid Data Received From ECM/PCM B Brand | Network |
| EOBD | U0442 | Kehtetu andmevoog ECM/PCM B-st Brand | Network |
| Geely | U0442 | Invalid Data Received From ECM/PCM B Brand | Network |
| GM | U0442 | Invalid Data Received From ECM/PCM B Brand | Network |
| Great Wall | U0442 | Invalid Data Received From ECM/PCM B Brand | Network |
| Hafei | U0442 | Invalid Data Received From ECM/PCM B Brand | Network |
| Holden | U0442 | No description available | Network |
| Hyundai | U0442 | No description available | Network |
| Isuzu | U0442 | No description available | Network |
| Land Rover | U0442 | Invalid Data Received From ECM/PCM 'B' Brand | Network |
| Opel | U0442 | Invalid Data Received From ECM/PCM B Brand | Network |
| Peugeot | U0442 | No description available | Network |
| Saab | U0442 | Invalid Data Received From ECM/PCM B Brand | Network |
| MG (SAIC) | U0442 | Signal Invalid HCU_RBSFault Brand | Network |
| Toyota | U0442 | Invalid data received from ECM/PCM B Brand | 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 22
These 7-character codes are manufacturer-specific variants of U0442 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | U044200 | CPC Signal invalid Brand | Network |
| Mercedes-Benz | U044202 | Implausible data were received from control unit Drivetrain. Counter byte when corresponding SAE Code is used more than one time Brand | Network |
| Mercedes-Benz | U044208 | No description available | Network |
| Sprinter | U044208 | No description available | Network |
| Mercedes-Benz | U044229 | Botschaften vom CPC SG werden mit einem fehlerhaften Wert empfangen. Brand | Network |
| Mercedes-Benz | U044231 | Implausible data were received from control unit 'Drivetrain' - The signal is not present. Brand | Network |
| Mercedes-Benz | U044237 | Implausible data were received from control unit 'Drivetrain' - The signal frequency is too high. Brand | Network |
| Mercedes-Benz | U044241 | Botschaft vom CPC-SG führen zu einem kumulierten Fehler in der RDU. Brand | Network |
| Mercedes-Benz | U044281 | CPC not available for HAF, PT Health stat invalid Brand | Network |
| Mercedes-Benz | U044282 | Implausible data were received from control unit 'Drivetrain'. The instruction counter is not updated. Brand | Network |
| Mercedes-Benz | U044286 | Communication Error CPC Brand | Network |
| Mercedes-Benz | U0442E1 | Signale vom CPC-Steuergerät werden mit ungültigen Werten oder mit Fehler gesendet Brand | Network |
| Sprinter | U0442E1 | No description available | Network |
| Mercedes-Benz | U0442E2 | Das Signal SADR_Stat_CPC_ST3 wird mit einem ungültigem Wert empfangen Brand | Network |
| Sprinter | U0442E2 | No description available | Network |
| Mercedes-Benz | U0442E3 | No description available | Network |
| Sprinter | U0442E3 | No description available | Network |
| Mercedes-Benz | U0442E4 | No description available | Network |
| Sprinter | U0442E4 | No description available | Network |
| Mercedes-Benz | U0442FA | SADR-Botschaften vom CPC-Steuergerät zeigen einen Fehler im SADR-Botschaftszähler oder CRC-Fehler Brand | Network |
| Mercedes-Benz | U0442FE | No description available | Network |
| Mercedes-Benz | U0442FF | Das FlexRay-Signal PT_Rdy_V2 vom CPC-SG ist fehlerhaft. Brand | Network |
6Related codes
Browse Uxxx codes or U044xx codes.