Check Engine Light
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Mountain Pass
Joined: Jun 2000
Posts: 133
Likes: 1
From: Lake Elmo, Minnesota
Check Engine Light
2001 Ranger 4 Liter, 216,000-miles
Got a check engine warning. I downloaded the code.PO442 Evaporative Emmission Control System Leak Detected (small leak). Duhh? Anyone know where that sensor is?
I've found lately that some sensors are simply failing and need to be replaced. I would try replacing the sensor before I try finding a small leak.
I thank you for any help you provide me.
Bob P.
Got a check engine warning. I downloaded the code.PO442 Evaporative Emmission Control System Leak Detected (small leak). Duhh? Anyone know where that sensor is?
I've found lately that some sensors are simply failing and need to be replaced. I would try replacing the sensor before I try finding a small leak.
I thank you for any help you provide me.
Bob P.
Fleet Mechanic
Joined: Sep 2007
Posts: 1,726
Likes: 10
From: down south
90% of the time this code is from the fuel fill cap either not being put on tight enough or the seal failing. If had it come on if it didnt get enough "clicks" and also about 5 months ago I ended up just replacing it (15$ for a ford one off amazon).
Fleet Mechanic
Joined: Jul 2019
Posts: 1,304
Likes: 310
2001 Ranger 4 Liter, 216,000-miles
Got a check engine warning. I downloaded the code.PO442 Evaporative Emmission Control System Leak Detected (small leak). Duhh? Anyone know where that sensor is?
I've found lately that some sensors are simply failing and need to be replaced. I would try replacing the sensor before I try finding a small leak.
I thank you for any help you provide me.
Bob P.
Got a check engine warning. I downloaded the code.PO442 Evaporative Emmission Control System Leak Detected (small leak). Duhh? Anyone know where that sensor is?
I've found lately that some sensors are simply failing and need to be replaced. I would try replacing the sensor before I try finding a small leak.
I thank you for any help you provide me.
Bob P.
You definitely wouldn’t be the first here to throw sensors at an issue to find the sensor was doing its job.
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