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'98 V70 GLT "check engine" light - do not believe it is the gas cap

I know about the potential problem with a gas cap not on tightly enough. I have been over that bridge already. I always make sure it clicks audibly when refueling. I have also in the past, when this light first started being a problem, had the light reset by a mechanic just in case it was the gas cap/refueling issue. The light came back on.

I am worried about this because I will have to have the car inspected. It will be a problem, will it not, if the "check engine" light is on with regard to passing inspection?

Reply to
daffy
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That depends where you are.

Exactly what code are you getting? If it is an evaporative system code you could have a bad solenoid valve in the system, which can be checked by the dealer - a bad vent line, a corroded fuel filler line, a bad fuel cap, or a rusted filler where the cap needs to seal (and cannot).

In regards to the solenoid valves - it can be an electrical failure, a mechanical failure, a wiring problem, or even a control problem (the "driver" in the computer blown, for example".

BASICALLY - a 440, 442,455 or 456 code indicates a system leak somewhere, while a 446 indicares a vent solenoid/system problem, a 443 is a purge valve/system problem, and a 453 is a high pressure problem

- which can be a sensor, vent, or purge problem and often occurs with either a 443 or 446.

The 445 is the most common "loose cap" code.

Reply to
clare

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