BrunoFuchsFan

Lexus ES Air Valve Issue

I own a 2018 Lexus ES hybrid with about 212797 kilometers. The check engine light is on, and diagnostics point to an air valve issue. My mechanic thinks it's a defective hose connection from the pump to the valve. I've checked the throttle body and air intake, but the manifold pressure seems normal. Has anyone had similar issues with their Lexus ES?

A 2018 Lexus ES hybrid owner experienced a check engine light issue, diagnosed as an air valve problem. The mechanic suspected a defective hose connection from the pump to the valve. After further investigation and a smoke test, the issue was confirmed to be a defective hose, which was subsequently repaired.

Did this summary help you solve your problem?

4 comment(s)

I own a Lexus ES too. I had a similar problem once. The air valve might be part of the secondary air injection system, which pumps fresh air into the exhaust during cold starts to reduce emissions. Do you hear any weird noises in the first few minutes after starting the car?

Thanks, I don't hear any unusual noises during cold starts, but the engine light usually comes on after a cold start. Does that point to a problem with the valve itself, or is the hose connection still the likely cause?

Since the light comes on after cold starts, the hose is still suspect because it hardens over time. But without more diagnostics, it's hard to say for sure. I'd suggest a qualified technician do a smoke test to find any leaks in the system.

Thanks for the advice. A smoke test was the next logical step. I took it to a local mechanic, and the defective hose diagnosis was correct. The total repair was 175€, including parts and labor. Thanks again!

rmh_community_comment_box_header

community_crosslink_scanner_headline

community_crosslink_scanner_intro

community_crosslink_scanner_title

community_crosslink_scanner_price

community_crosslink_rmh_headline

community_crosslink_rmh_intro

community_crosslink_rmh_title

community_crosslink_rmh_subtitle

community_crosslink_rmh_brand

LEXUS

community_crosslink_rmh_model