VOLVO
ECM-8430 - Sensor supply 3. Signal too low
System
Engine Control Module (ECM)
Volvo models this fault code applies to
This fault code has different meanings depending on model, model year or engine. Select the meaning that applies to your car.
Applies to the following models:
8 modelsC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), S60 (2001–2009), V50 (2004–2013), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Show models by year and engine (23)
- Volvo C30 (2007–2013)2007Engine D5244T8, D5244T9 only
- Volvo C30 (2007–2013)2008, 2010Engine D5244T13, D5244T8, D5244T9 only
- Volvo C30 (2007–2013)2009Engine D4164T, D5244T13, D5244T8, D5244T9 only
- Volvo C70 (2006–2013)2007Engine D5244T8, D5244T9 only
- Volvo C70 (2006–2013)2008–2010Engine D5244T13, D5244T8, D5244T9 only
- Volvo S40 (2004–2013)2006Engine D5244T8 only
- Volvo S40 (2004–2013)2007Engine D5244T8, D5244T9 only
- Volvo S40 (2004–2013)2008, 2010Engine D5244T13, D5244T8, D5244T9 only
- Volvo S40 (2004–2013)2009Engine D4164T, D5244T13, D5244T8, D5244T9 only
- Volvo S60 (2001–2009)2006Engine D5244T4, D5244T5, D5244T6, D5244T7 only
- Volvo S60 (2001–2009)2007–2009Engine D5244T4, D5244T5, D5244T7 only
- Volvo V50 (2004–2013)2006Engine D5244T8 only
- Volvo V50 (2004–2013)2007Engine D5244T8, D5244T9 only
- Volvo V50 (2004–2013)2008, 2010Engine D5244T13, D5244T8, D5244T9 only
- Volvo V50 (2004–2013)2009Engine D4164T, D5244T13, D5244T8, D5244T9 only
- Volvo V70 (2000–2008)2006Engine D5244T4, D5244T5, D5244T6, D5244T7 only
- Volvo V70 (2000–2008)2007Engine D5244T4, D5244T5, D5244T7 only
- Volvo V70 (2000–2008)2008Engine D5244T5, D5244T7 only
- Volvo V70 XC / XC70 (2001–2007)2006–2007Engine D5244T4 only
- Volvo XC90 (2003–)2006–2007Engine D5244T4 only
- Volvo XC90 (2003–)2008–2010Engine D5244T4, D5244T5 only
- Volvo XC90 (2003–)2011Engine D5244T18, D5244T4, D5244T5 only
- Volvo XC90 (2003–)2012All engines except: B5254T2, B6324S5
What does this fault code mean?
The engine control module (ECM) monitors the supply voltage to some of the engine sensors and sets the code when it is too low or too high. This variant applies to a supply that is too low, which can be caused by a fault at the EGR valve connection, poor contact, an open circuit or a short to ground in the supply wire.
Possible causes
- A fault at the connection to the EGR valve
- Loose connection, contact resistance or oxidation in the connections
- Open circuit in the supply wire
- Short to ground in the supply wire
What you can do
- 1Read the code, clear it and road test the car to see whether it comes back
- 2Check the EGR valve connector for loose fit and oxidation
- 3A short in the EGR valve connector can also affect the fuel pressure sensor, since both share a supply connection on the control module; check that sensor connector too
- 4Use a multimeter to check that the supply wire has no open circuit and is not shorted to ground (the body)
- 5If the fault remains after these checks, have a workshop continue the fault finding
Symptoms you may notice4
- Poor performance and lack of power
- Hesitation, surging or jerky running when accelerating and when speed drops
- The engine does not start, and it can happen at any time
- The engine stalls, and it can happen at any time
General guidance for car owners. Diagnosis on the car can point to a different cause.