Skip the auto shop - Our mechanics make house calls

Q: Check Engine light and camshaft position sensor code

asked by on

The Check Engine Light goes on and off. Also, the camshaft position sensor code is preventing me from passing a smog check.

A: Hi. If you have a camshaft position sensor ...

Hi. If you have a camshaft position sensor code that is coming up, then that is why the Check Engine Light is coming off and on. Most of the time, this is caused by a sensor failure, but it can also happen if the cam timing is off. If the timing belt has not been changed on the engine, then it may be worn out and is affecting the valve timing which will trigger these codes. A mechanic would typically inspect the valve timing and also check to see if the cam sensor is falling within resistance specifications. I would recommend you have a mechanic, like one from YourMechanic, inspect the Check Engine Light and repair any damaged parts.

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: Intermittent Oil Pressure Light shows still, please help!

Hi there. Check the oil pressure with the engine at 4000 RPM's. If the oil pressure is normal and high, then the oil pressure sensor is failing due to engine harmonic vibrations. If the oil pressure has dropped at...

Q: Window regulator stopped working

Hello, there are a variety of causes for the power window regulator to fail. The most likely would be the regulator, switch, and regulator motor. Given that these have been replaced it should take care of the issue. Humidity can...

Q: Faulty door locks

Hello, and thank you for writing in. Getting a second opinion is always a good idea. Your vehicle has the option to open just the driver's door, or to open all of the doors. Typically you click the key fob...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...