VOLVO
KVM-001B - Outer antenna rear. Signal too low
System
Keyless Vehicle Module (KVM)
Volvo models this fault code applies to
Applies to the following models:
4 modelsC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Show models by year and engine (4)
What does this fault code mean?
The keyless vehicle module (KVM) monitors the connection to the outer antenna at the rear of the car when the car reaches a certain speed. The code is stored when the signal from the rear antenna circuit is too low. The keyless functions then work poorly or not at all.
Possible causes
- Signal wire to the outer rear antenna shorted to ground
- The outer rear antenna is faulty
What you can do
- 1Read the code, clear it and road test the car
- 2Disconnect the battery negative lead before working on the wiring, then inspect the wiring to the rear antenna for damage and chafing
- 3Use a multimeter to check that the wire to the rear antenna is not in contact with ground (the body)
- 4Make sure the connector at the antenna and at the KVM is firmly seated and clean
- 5Have a workshop with diagnostic equipment check the antenna and replace it if the wiring is sound
Symptoms you may notice1
- Keyless functions do not work at all or work poorly
General guidance for car owners. Diagnosis on the car can point to a different cause.