My check engine light came on yesterday and I scanned the car and got codes P3400 and P3497. The car has been driving normally and I haven’t noticed any unusual noises or other symptoms.
I checked the oil today before starting the car and there was no oil registering on the dipstick. I wiped it, reinserted it and checked both sides and it was still dry. My last oil change was on 6/17/26 at 178,195 miles and the car currently has 182,049 miles, so it has been about 3,850 miles.
The last time I had the oil changed, the shop also told me the oil was low. They checked for an external leak but said they couldn’t find anything obvious and thought the engine might be consuming oil. That visit was after I had a misfire on cylinder 3. They found oil in the spark plug well, replaced all six spark plugs and the cylinder 3 ignition coil, and changed the oil.
I haven’t noticed any oil spots where I park or obvious smoke from the exhaust. I also haven’t started the car since finding the dipstick dry.
Could the oil being this low cause both P3400 and P3497 to come on? Also, since this is the second time the oil has been found low, what should I be looking at as far as where the oil is going? I have replaced both valve cover gaskets at the beginning of this year which were leaking and I haven't noticed a leak since
I checked the oil today before starting the car and there was no oil registering on the dipstick. I wiped it, reinserted it and checked both sides and it was still dry. My last oil change was on 6/17/26 at 178,195 miles and the car currently has 182,049 miles, so it has been about 3,850 miles.
The last time I had the oil changed, the shop also told me the oil was low. They checked for an external leak but said they couldn’t find anything obvious and thought the engine might be consuming oil. That visit was after I had a misfire on cylinder 3. They found oil in the spark plug well, replaced all six spark plugs and the cylinder 3 ignition coil, and changed the oil.
I haven’t noticed any oil spots where I park or obvious smoke from the exhaust. I also haven’t started the car since finding the dipstick dry.
Could the oil being this low cause both P3400 and P3497 to come on? Also, since this is the second time the oil has been found low, what should I be looking at as far as where the oil is going? I have replaced both valve cover gaskets at the beginning of this year which were leaking and I haven't noticed a leak since
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Sep 4, 2026 at 2:42 PM
