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

A: After the prior work and clearing codes - w...

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: My gear selector is broken.

Depending on where and how badly the gear selector is broken, you may not have to replace the entire steering column to fix the selector fixed. The gear selector is sold separately . You will still have to gain access...

Q: Key not turning all the way

If you are having difficulty turning the key in the ignition switch, this may be a sign that the ignition lock cylinder, or perhaps the key, are worn and in need of replacement. This repair requires disassembling of the steering...

Q: Which brand of new front CV drive axle is best for replacement at 80k miles? 2007 Toyota FJ Cruiser

Hi there - the real question is whether you are buying (from any parts house) a "rebuilt" or "remanufactured" axles/CV joint, or a new one. If it's a new one, is it made by an Original Equipment Manufacturer (OEM) such...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...