VOLVO
EPS-U300616 - Control Module Input Power "A". General Electrical Failures. Circuit voltage below threshold
System
Electrical Power Steering (EPS)
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 (5)
- Volvo C30 (2007–2013)2011–2013Engine D4162T, D5204T, D5204T5 only
- Volvo C70 (2006–2013)2011Engine D5204T, D5204T5 only
- Volvo C70 (2006–2013)2012–2013All engines except: B5254T7
- Volvo S40 (2004–2013)2011–2012Engine D4162T, D5204T, D5204T5 only
- Volvo V50 (2004–2013)2011–2012Engine D4162T, D5204T, D5204T5 only
What does this fault code mean?
The power steering module monitors the power supply to it and registers that the voltage is too low. The cause can be a weak battery, poor contact or oxidation at the connections, or an open circuit or a short to earth in the supply wire. Power steering control is then affected.
Possible causes
- Battery voltage too low
- Contact resistance or oxidation at the connections
- Supply wire shorted to earth
- Open circuit in the supply wire
What you can do
- 1Check the battery and that the battery terminals are tight and free from corrosion
- 2Check that the fuses for the power steering are intact. Their location is in the owner's manual or on the cover of the fuse box
- 3Use a multimeter to check that the supply wire has no break and is not shorted to earth
- 4Check the supply connectors for contact resistance and oxidation, and remedy as needed
- 5If the fault remains after these checks, have a workshop with diagnostic equipment check the power supply to the power steering
- 6Power steering affects how easily the car can be steered, so have a workshop fix the fault soon
Symptoms you may notice2
- Yellow warning symbol and text message in the display
- Power steering control does not work
General guidance for car owners. Diagnosis on the car can point to a different cause.