Evaporative Emission Control System Leak Detected

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1answer
85 views

Erratic single fault code: P0420, P0440, P0446. Normal variance, or indicative of something deeper?

Working on diagnosing an evap/emission/fuel system problem on my Toyota 2003 Corolla. More on that in this question. On 3/2, I saw a mechanic use his handheld OBD to read a code P0420. On 3/12, ...
7
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3answers
376 views

2003 Toyota Corolla, 185k: erratic OBD codes, fuel smell, other symptoms

TL;DR: O2 sensor data, thermal measurements, and physical resonance tests all point to a failed Catalytic converter. Here's the back story. MIL illuminated with codes P0440, P0420, P0404. Around ...
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votes
0answers
206 views

Evap. circuit malfunction on Mercedes Benz

I have a 2002 ML320 suv. The CEL is on, and the code is P0446. It states that there is something wrong with the evap. system circuit, specifically at the charcoal canister shut-off valve. I've tried ...
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2answers
5k views

2000 Camry P0446 Evaporative Emission Control System Vent Control Circuit Malfunction

I have a 2000 Camry with 86,000 mi the check-engine light came on 4 days ago. It has come on intermittently in the past and then shut off itself. This time it hasn't gone away. A Code reader shows ...