NetworkU1006
SeriousSeverity: Serious - have it checked soon
Low voltage detected
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 24
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | U1006 | Pressure Control Solenoid Valve. L Solenoid Valve. Component Stuck In Closed Position Brand | Network |
| Mercedes-Benz | U1006 | No description available | Network |
| BYD | U1006 | Communication line error (bus cutoff) CANL open circuit Brand | Network |
| Chery | U1006 | CAN communication fault Brand | Network |
| Daewoo | U1006 | Loss of serial communications for class 2 devices Brand | Network |
| Daihatsu | U1006 | Lost communication with gateway module Brand | Network |
| DFXK | U1006 | No Communication with NOX Sensor 1 Bank 1 Brand | Network |
| EOBD | U1006 | Jännite alhainen Brand | Network |
| Geely | U1006 | No Communication with NOX Sensor 1 Bank 1 Brand | Network |
| GM | U1006 | Loss of serial communications for class 2 devices Brand | Network |
| Hyundai | U1006 | No description available | Network |
| Isuzu | U1006 | No description available | Network |
| Land Rover | U1006 | Sub Network CAN Initialization Failure Brand | Network |
| Mahindra | U1006 | No description available | Network |
| Mitsubishi | U1006 | Security alarm siren LIN timeout Brand | Network |
| Perodua | U1006 | Lost communication with gateway module Brand | Network |
| Peugeot | U1006 | No description available | Network |
| Proton | U1006 | Security alarm siren LIN timeout Brand | Network |
| Saab | U1006 | Loss of serial communications for class 2 devices Brand | Network |
| Smart | U1006 | No description available | Network |
| Sprinter | U1006 | No description available | Network |
| Tata | U1006 | No description available | Network |
| Toyota | U1006 | Low voltage detected Brand | Network |
| Volkswagen | U1006 | No communication with NOx sensor 1 bank 1; Implausible signal 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 1
These 7-character codes are manufacturer-specific variants of U1006 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| SsangYong | U100687 | CAN communication: Battery Management System (BMS) message not received Brand | Network |
6Related codes
Browse Uxxx codes or U100xx codes.