Forum Discussion

T-Rex's avatar
T-Rex
Explorer
Jan 27, 2021

Check Engine Light...Going on 5 years & 20,000 miles...

After 5 years (and 20,000 miles) of owning my 2007 Class C RV with an E450 chassis, I am finally committed to resolving what should have been addressed right way. The prior owner had taken the RV to a Ford Dealership service center after seeing a Check Engine Light (CEL), and they replaced an oxygen sensor for over $600. The problem initially appeared to have been resolved, but soon later, it reappeared. Since it never posed a significant problem, I've always just erased the code and went on my merry way. I recently saw a forum post stating that a "stuck lean" code could indicate a problem that may be engine damaging, and so I'm FINALLY anxious to get this properly resolved.

When I start the engine for the first time on a given day, the engine usually runs fairly rough and sounds like it may stall (though it never has), and sometimes this rough idle is accompanied by the CEL. Eventually it "smooths out" on it's own, especially if I give it a little gas. If the engine has already been warmed up, and I start the engine, it immediately runs smoothly and no CEL appears. Over the past year or so, it's only been a P2195 code, but previously, I've seen P2196, P2197 and P0105.

If it's not too difficult, I'm willing to try replacing sensors with new ones or just clean the existing ones. Even if I guess wrong once or twice about which part is defective, I'm probably better off financially than if I took it to a Ford dealership.

I would really appreciate any thoughts of the root cause of this issue given the signs and symptoms above, and thoughts about a novice tackling a repair himself.

Thank you,
Eric
  • This is a commonly found engine and these are fairly routine parts to replace. I'd find a medium/ heavy truck repair shop and ask them you replace all the parts. We're talking much money on parts vs the labor cost to go in separately. This reduces variables quickly. www.rvservicereviews.com is a good listing of recommended providers by region.

    As for DIY, are you comfortable Changing the air filter? Oil change? Replacing a sway bar? There are plenty of YouTube videos but you have to be in the right mindset to take on multiple part replacements and haven't given us an indicator of how much of a novice you are. When in doubt, I dig in, try, and learn- because an RV is expensive to maintain if you have everything done by others.
  • Yes, I saw all of those possible fixes. Given that I only encounter the throwing of the code(s) upon cold start, I'm wondering if that might help diagnose which of those fixes is most likely to work. If there is no way to tell, however, I may try cleaning or replacing the MAF as this is the only thing I've seen replaced online and looks like something I can handle.
  • Did you do the following ?
    I ran the code to see what fixes were common.

    What repairs can fix the P2195 code?
    Replacing the O2 sensor.
    Replacing the fuel pressure regulator.
    Replacing a leaking injector.
    Replacing a cracked intake air tube.
    Cleaning or replacing the mass airfl
  • pauldub wrote:
    You might find more help here.


    Thank you.
    Would still like to hear from others too, please.