VOLVO
ECM-430C - Leak diagnostic. Smallest leak
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:
9 modelsC70 Cabriolet (1998–2005), C70 Coupé (1998–2002), S60 (2001–2009), S70 (1997–2000), S80 (1999–2006), V70 (1997–2000), V70 (2000–2008), V70 XC (1998–2000), V70 XC / XC70 (2001–2007)
Show models by year and engine (13)
- Volvo C70 Cabriolet (1998–2005)2000All engines except: B5244S
- Volvo C70 Cabriolet (1998–2005)2001–2002
- Volvo C70 Coupé (1998–2002)2000All engines except: B5244S
- Volvo C70 Coupé (1998–2002)2001–2002
- Volvo S60 (2001–2009)2001All engines except: B5244S, B5244S2, D5244T
- Volvo S70 (1997–2000)2000Engine B5204T3, B5204T4, B5234T3, B5234T7, B5244T only
- Volvo S80 (1999–2006)2000All engines except: B5244S, B5244S2, D5252T MSA 15.8
- Volvo S80 (1999–2006)2001Engine B5204T5, B5234T7, B5244T3, B6284T, B6294S only
- Volvo V70 (1997–2000)2000All engines except: B5244S, B5244S2, B5244SG, B5244SG2, D5252T MSA 15.8
- Volvo V70 (2000–2008)2000All engines except: D5252T MSA 15.8
- Volvo V70 (2000–2008)2001Engine B5204T5, B5234T3, B5234T7, B5244T3 only
- Volvo V70 XC (1998–2000)2000
- Volvo V70 XC / XC70 (2001–2007)2001
What does this fault code mean?
The leak diagnostic has found a very small leak in the fuel tank system, a so-called smallest leak. The fault can be in the tank, the filler pipe, the filler cap, the canister, the canister shut-off valve or the hoses between them. Because the leak is so small, it can be hard to find without testing the system.
Possible causes
- Leaking fuel tank
- Leaking filler pipe or filler cap
- Leaking canister, shut-off valve or the lines between them
What you can do
- 1Check that the filler cap is correctly fitted and that its seal is undamaged
- 2Check hoses and hose connections at the canister, the canister shut-off valve and the tank, and remedy as needed
- 3Have a workshop with diagnostic equipment run a fast leak check of the tank system, since the leak is too small to find by sight
- 4The test does not start when the engine is cold, so let the engine warm up before the workshop tests
- 5Clear the fault code after the repair and test drive the car to see if it returns
Symptoms you may notice1
- The Check engine lamp comes on or behaves abnormally
General guidance for car owners. Diagnosis on the car can point to a different cause.