I had an OBD hooked up when my check engine like came on. It suggested PCV valve. I replaced it, and didn't go off. I later found a rudder elbow that the radiator hose had been resting on it and it had melted a hole in it. This elbow was on a vaccum line that came around the front of the engine on the left side. But I replaced it, and it's been over 100 miles since and the check engine light is still on. Does it reset on it's on, or is there still an issue that's causing it too stay on. I haven't had it hooked back up to an OBD tool since either. So I am just asking too see if anyone else has encountered these issues

 

Welcome to the forum

Please post the exact code number

And the year of the Ranger?
And the engine size?

As far as I know there are no PCV Valve codes as this is not a monitored system

 

I don't have the code number.Had it checked at Auto Zone and I threw the paper away. But it's an '03 Model, 4.0 Liter, 4x4. It only has 140,000 miles on it of that helps

 

Yes, the year and engine size always helps

Here is a full OBD code list for 2003 Ranger: https://therangerstation.com/tech_li...II_codes.shtml

You tell me if we need the exact code to help, lol

You need to get the code again

Yes a code will self clear if the problem is fixed
But since there is no PCV code you probably haven't fixed it

You don't mention any running issues, i.e. misfires, stalling, high idle, ect...................

So my guess would be a EVAP system code, there are 20 of them, but they don't effect vehicles engine

 

Went to have the OBD hooked back up to get the code pulled up and the guy at AutoZone said that I may have a fuse blown because when he hooked the OBD into the outlet where it plugs in the machine wouldn't come on and he said you know that when that happens there's a fuse blown somewhere and there's no power getting to that Port so that's why the tool wouldn't come on and he said that maybe could be why my check engine lights on because that fuse is blown but I told him I had it checked last year and they were able to pull a code up with the check engine light on so does that make any sense the tool would not turn on because he said the fuse going to that Port is blown where the tool hooks up to

 

In 2003 its fuse #17, 20amp, its for the cigar lighter and the DLC(OBD port power)

You if you have anything plugged into the cigar lighter it won't be working either if the fuse is blown

No, that won't cause check engine light, for sure

 

So I had my truck hooked up to a OBD and it pulled up to codes one was saying system too lean bank 1 and the other card says the same but the numbers were P0171 and the other was P0174 so is that a sensor or anyting as far as a hose leaking

 

P0171 System too Lean (Bank 1)
P0174 System too Lean (Bank 2)

V6 engines have 3 cylinders on each "bank"/side of the engine
Passenger side is designated as Bank 1
Drivers side Bank 2

These two codes means the the whole engine, both Banks, are showing Lean exhaust

Engine is NOT actually running Lean, that is NOT what these codes mean

What they mean is that the computer is add more fuel that it originally calculate based on RPMs and Air flow data, so its letting the Driver know there is a problem with its calculations


On the 2003 4.0l SOHC engine the PCV Valve hose would often crack and suck in extra air, this throws off the computers calculations so "Lean codes"

Google: 4.0l SOHC PCV hose leak

Thats the first "guess", let us know

And Clean the MAF sensor, always the first thing to do on these 4.0l engines, even with no codes