Skip the auto shop - Our mechanics make house calls

Q: Check engine -- timing chain

asked by on

Got a check engine, changed crankshaft position sensor, camshaft sensor, vvt sensor, oil, transmission service, car running great but check engine still on. Code says correlation sensor bank 1, sensor 1, crankshaft-camshaft correlation sensor position

After the prior work and clearing codes - what codes remain now? If the "crank/cam correlation sensor position" error is still active, chances are you have timing chain guide, timing chain stretch, tensioner, or idler pulley wear enough to cause the crank/cam timing relationship to falter.

The engine will run with some crank/cam misalignment, but you are at increased danger of a piston/valve collision - new engines run at very tight operating clearances. Very expensive consequences. To have this investigated more thoroughly, I would have a certified technician, like one from YourMechanic, inspect the Check Engine Light to pinpoint the correct repair that needs to be done.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: The engine light came on

Hi, thanks for writing in. The hard start may happen after refueling due to a problem with the purge control valve leaking when it should be closed. If the code is for an emission leak detected then this valve that...

Q: Air

Hello there, thank you for asking about your 2008 Ford Mustang. You will need to have the blower motor under the right side of the dash checked to see if it is getting power from the blower relay that is...

Q: What conditions might affect the signal from my remote or electronic key?

While your remote or electronic key might be pretty advanced in terms of technology, there are some conditions that will affect operation and signal strength. When this happens, the weak radio waves emitted from the key or remote may not...

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...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.