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 L5-2.5L TURBO VIN 59 B5254T2REPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONMANUFACTURER CODE CHARTSECM CODES (ENGINE CONTROL MODULE)ECM-406CFUEL TANK FILLER CAP MISSING
2004 Volvo V70 L5-2.5L Turbo VIN 59 B5254T2
Fuel Tank Filler Cap Missing
2004 Volvo V70 L5-2.5L Turbo VIN 59 B5254T2SECTION Fuel Tank Filler Cap Missing
Fuel tank filler cap missing
Checking other diagnostic trouble codes (DTCs), engine control module (ECM)
Hint: This diagnostic trouble code (DTC) can only be stored after a refueling. The diagnostic detects major leaks in the fuel tank system. The most likely cause is that the fuel tank filler cap has not been installed correctly. For further information about this diagnostic trouble code (DTC), see Diagnostic Trouble Code (DTC) Information.
In the event of a permanent fault, a diagnostic trouble code (DTC) for a "Major leak" will also be stored after the major leak diagnostic is complete.
- Check if the diagnostic trouble code (DTC) for "Major leak" is stored in the engine control module (ECM), if so, fault-trace from it instead.
- If no diagnostic trouble code for "Major leak" is stored, perform a quick test of the tank system via VEHICLE COMMUNICATION to ensure that the fault was intermittent and probably caused by the fuel tank filler cap?
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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.