What does fault code KVM-U014000 mean?

Diagnostic fault code details for KVM-U014000 (Volvo S60 (2011–), Volvo V40 (2013–), Volvo V40 Cross Country (2013–)). Repair service at OBD Tuning.

VOLVO

KVM-U014000 - Lost communication with Central Electronic Module (CEM). General Failure Information. No sub type information

System

Keyless Vehicle Module (KVM)

Volvo models this fault code applies to

Applies to the following models:

5 models

S60 (2011–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–)

Show models by year and engine (5)

What does this fault code mean?

The keyless vehicle module (KVM) receives the information it needs from the central electronic module (CEM) continuously over CAN communication. When the signal from the CEM stops and communication between them is interrupted, the code is set. The fault may lie in the CAN network, in the sending module, or in a module having been replaced without new software being loaded.

Possible causes

The CEM is no longer transmitting the signal that the keyless module expects
Open circuit in one or both CAN wires in part of the network
Short circuit between the CAN wires
Short circuit between one of the CAN wires and ground or supply voltage
Incorrect signal configuration in the control module that set the code, for example after a control module was replaced without new software being loaded

What you can do

1Read the codes in all control modules; if several show communication faults, start troubleshooting in the central electronic module (CEM)
2Check the wiring in the CAN network for damage, chafing and loose or corroded connectors
3Clear the code and road test the car to see whether it comes back
4If the code is only stored in the control module that set it, have a workshop download and program the latest software
5Have a workshop measure the resistance in MS-CAN with the central electronic module disconnected to find where the open circuits or short circuits are
6Do not replace the central electronic module (CEM) because of a CAN fault unless troubleshooting shows it has an internal fault

Symptoms you may notice1

Locking, unlocking and central locking do not work

General guidance for car owners. Diagnosis on the car can point to a different cause.