VOLVO
AEM-4F61 - Back-up (reversing) warning system. Signal too high. Permanent fault
System
Accessory Electronic Module (AEM)
Volvo models this fault code applies to
Applies to the following models:
4 modelsS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007)
Show models by year and engine (4)
What does this fault code mean?
The AEM has registered a signal that is too high on the supply to the reversing warning system while reverse gear is not selected. The fault is permanent and the reversing warning is switched off. The cause is usually a short to supply voltage in the supply wire or a faulty warning unit.
Possible causes
- Supply wire to the reversing warning system shorted to supply voltage
- Faulty reversing warning system
What you can do
- 1Follow the supply wire to the reversing warning system and look for chafing or damage
- 2Check the connectors at the reversing warning system for oxidation and damage
- 3Check that the reversing warning works when reverse gear is selected
- 4If the fault remains, have a workshop check the warning system after the wiring has been checked
Symptoms you may notice1
- Reversing warning system does not work
What the fault can affect1
- The reversing warning system is switched off
General guidance for car owners. Diagnosis on the car can point to a different cause.