NetworkU1600
SeriousSeverity: Serious - have it checked soon
MBUSY open
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 22
| Brand | Code | Description | System |
|---|---|---|---|
| BAIC Motor | U1600 | EEPROM Communication Fault Brand | Network |
| Mercedes-Benz | U1600 | No description available | Network |
| BYD | U1600 | MBUSY open Brand | Network |
| Chery | U1600 | MBUSY open Brand | Network |
| DFFS | U1600 | Internal CAN network L2 function related signal failure Brand | Network |
| DFFX | U1600 | MBUSY open Brand | Network |
| EOBD | U1600 | MBUSY auki Brand | Network |
| Geely | U1600 | MBUSY open Brand | Network |
| Great Wall | U1600 | MBUSY open Brand | Network |
| Hafei | U1600 | MBUSY open Brand | Network |
| Honda | U1600 | F-CAN Malfunction(ICM - PGM-FI) Brand | Network |
| Hyundai | U1600 | No description available | Network |
| Maserati | U1600 | ECU Application Software Mismatch Brand | Network |
| Mitsubishi | U1600 | MBUSY open Brand | Network |
| Peugeot | U1600 | No description available | Network |
| Proton | U1600 | MBUSY open Brand | Network |
| MG (SAIC) | U1600 | Communication Error Brand | Network |
| Smart | U1600 | No description available | Network |
| Sprinter | U1600 | No description available | Network |
| Subaru | U1600 | No description available | Network |
| Suzuki | U1600 | Implausible TCM Torque Message Received Brand | Network |
| Toyota | U1600 | MBUSY open 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 2
These 7-character codes are manufacturer-specific variants of U1600 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | U160000 | The software modules of the control unit do not match. Brand | Network |
| SsangYong | U160000 | ECU application software missing Brand | Network |
6Related codes
Browse Uxxx codes or U160xx codes.