NetworkU1446

Serious

Severity: Serious - have it checked soon

Implausible Heated Steering Wheel Temperature Message Received (CCN)

2 brands affected · Description from Maserati data.

Key terms: Control module: a small computer that runs one part of the car

Safety: This code relates to the steering system. Steering effort may increase.

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 2

Brand	Code	Description	System
Maserati	U1446	Implausible Heated Steering Wheel Temperature Message Received (CCN) Brand	Network
Subaru	U1446	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 14

These 7-character codes are manufacturer-specific variants of U1446 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	U144664	Implausible data were received from control unit Radar sensorics. There is an implausible signal. Brand	Network
Mercedes-Benz	U144697	Implausible data were received from control unit Radar sensorics. The system function is restricted. Brand	Network
Mercedes-Benz	U14469A	Implausible data were received from control unit Radar sensorics. The operating conditions for the component or the system are not satisfied. Brand	Network
Mercedes-Benz	U1446E0	GMS Fault - Plausibility failure Brand	Network
Mercedes-Benz	U1446E1	GMS Fault - RDU shut-down failure Brand	Network
Sprinter	U1446E1	No description available	Network
Mercedes-Benz	U1446E2	GMS Fault - GMS intervention is too long Brand	Network
Sprinter	U1446E2	No description available	Network
Mercedes-Benz	U1446E3	No description available	Network
Sprinter	U1446E3	No description available	Network
Mercedes-Benz	U1446FE	GMS Fault - Velocity failure Brand	Network
Sprinter	U1446FE	No description available	Network
Mercedes-Benz	U1446FF	GMS Fault - Gradient failure Brand	Network
Sprinter	U1446FF	No description available	Network

6Related codes

Browse Uxxx codes or U144xx codes.