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gabrieldark1

Honda Accord air valve issue

Got a 2004 Honda Accord with a gasoline engine, 218k km on the clock. Check engine light's on. Suspect air valve issue, likely a defective hose connection from the pump to the valve. Anyone seen this before?

Summary of the thread

A 2004 Honda Accord owner experienced a check engine light issue, suspecting a defective hose connection from the pump to the air valve. The problem was confirmed to be related to the air supply system, with codes indicating an air supply issue. After checking the main vacuum hoses, it was suggested to have a professional workshop perform a smoke test to identify any hard-to-see cracks or leaks. Ultimately, the issue was resolved by fixing the hose connection, confirming the initial suspicion.

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4 comment(s)

gretaberger46

Air valve, eh? Hmm. On a '04 Accord? That's a bit unusual. Are you absolutely sure it's the air valve? I mean, the check engine light could be a million things. Have you checked for any vacuum leaks, especially around the air supply or throttle body? They can mimic air valve problems. What codes are you getting? Need more info before I jump on the air valve bandwagon.

gabrieldark1 (community.author)

Codes point to the air supply being off. I've checked the obvious vacuum hoses. Anything specific I should be looking for?

gretaberger46

Okay, air supply codes, that's helpful. If you've checked the main hoses, then yeah, it's pointing more to the air valve system. But honestly, without seeing it myself, tracing those tiny vacuum lines is a pain. Given the age, they might be brittle and cracked somewhere hard to see. Honestly, at this point, you're probably best off just taking it to a workshop. Let them smoke test it or something. Before you sink too much time and frustration into it.

gabrieldark1 (community.author)

Fair enough. Took it in. Hose connection from pump to valve was indeed the culprit, just like I thought. 175€ later, all fixed. Thanks for the input.

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HONDA

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ACCORD