Q: Fuel consumption issues after crankshaft position sensor reset

asked by on

The dealership relearned the CKP after I took my 2009 Honda Accord in b/c of the malfunction and VSA lights coming on. It was running roughly and wouldn't accelerate properly when I pushed the accelerator. The next time I turned the car on, both lights came on again. The 2nd time I started it only the malfunction light came on. The 3rd time both lights didn't turn on. Yesterday I took a 110 mile trip and noticed that after 116 miles on a full tank of gas that I am almost at empty. I usually get over 375 miles / tank. Is this all related? Could it be that just the fuel gauge is off? I've never had any of these problems before and the technician told me he didn't know what caused the error message in the first place.

My car has 119215 miles.
My car has an automatic transmission.

Hello. If your lights are coming on and off then there may still be an issue somewhere with the vehicle. If there was a recent reset due to an issue with the crank position sensor it may be possible that the issue has returned or is still affecting the vehicle. The crankshaft position sensor plays an important role in the engine management system’s calculations, and a problem with it can cause all sorts of issues, including a decrease in mpg. If the light returns I would have the vehicle scanned for trouble codes to determine if that may indeed be the issue. Similar symptoms can also be caused by many other things, such as a problems with the fuel, ignition, or elsewhere in the engine management system, perhaps related to wiring. I would start by checking the crank position sensor as there was a previous issue with it that set off a warning light. As the possibilities could vary widely, if you are unsure, I would recommend having a professional technician, such as one from YourMechanic, visit your location to determine if the crankshaft position needs to be replaced.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Fuel consumption issues after crankshaft position sensor reset

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: MY EPS , VAS AND TPMS IS ON AFTER I CHANGED MY BACK TIRE

It sounds like the hub assembly/wheel bearing and the tpms sensor may have been damaged when the tire blew out. I would recommend having a suspension inspecton performed to determine if the ABS system has been damaged. If so, the...

Q: I hit an animal recently, it cracked my bumper. Is it any way related to suspension damage?

An impact from hitting the animal can do damage that's not obvious at first. Damage can occur to the frame, mess up your alignment, and a variety of other issues. You will want to examine the area that was hit....

Q: Oil pressure sensor flashing

First, you need to check the engine oil level. If it is low, top it off to the specified amount on the dipstick. If the level is normal, you may have a bad pressure switch that is simply not reading...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...