Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSVOLVO2004V70 L5-2.4L VIN 64 B5244S6REPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONMANUFACTURER CODE CHARTSECM CODES (ENGINE CONTROL MODULE)ECM-432AFAULTY SIGNAL21 - CHECKING FUEL TANK SYSTEM
2004 Volvo V70 L5-2.4L VIN 64 B5244S6
21 - Checking Fuel Tank System
2004 Volvo V70 L5-2.4L VIN 64 B5244S6SECTION 21 - Checking Fuel Tank System
Checking Fuel Tank System
WARNING: First read Safety regulations for handling a fuel.
HINT: The fault may be due to leakage in the fuel tank, fuel filler pipe, fuel tank filler cap, carbon filter container, evaporative emission system (EVAP) valve, leak diagnostic unit or in the hoses between these components.
- Ignition off.
- Pressurize the tank system to locate any leaks. See Test pressurizing the tank system.
When the fuel tank system is pressurized:
Check the fuel tank system for leakage by spraying soap solution on the components for the fuel tank system, such as the tank, fuel filler pipe, fuel tank filler cap, evaporative emission system (EVAP) valve, carbon filter container and the hoses and hose terminals between these components.
Remedy as necessary.
Reinstall components, hoses etc.
If no leakage can be found in the fuel tank system after the above checks and corrective action but the fault remains after the quick test, the leak diagnostic unit may be defective.
Run a quick test of the fuel tank system after the above checks and corrective action to check if the fault is still present.
Other Information:
- To lower the tank, see Fuel tank, replacing.
Press "Continue" to carry out the quick test of the fuel tank system.
Continue: Refer to 18. Activating the Quick Test of the Fuel Tank System. 18 - Activating the Quick Test of the Fuel Tank System
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.