Q: Code P0340

asked by on November 02, 2016

Hello. I was driving my 06 sonata and then it would not let me accelerate and would no longer drive. I turned it off and back on the it worked. The error code said it was a camshaft sensor so I replaced it and the check engine light was gone. I drove it the next morning and once I hit 70mph the check engine light came back on. What else could it be?

The P0340 problem code references a camshaft position sensor malfunction. The ability to restart the engine suggests it is failing versus has failed. There was an issue with this engine with the cam chain tensioner - which also affects cam timing, and could set a P0340. The Technical Service Bulletin is # 219296, and involves replacing the tensioner. I would consult your Hyundai Service Manager to discuss whether this tensioner replacement has been done on your car, and the possible impact of that problem component.

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

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

Keep burning through head gaskets

Unfortunately this is a well know problem with the Chevrolet Equinox's. It really has nothing to do with driving habits, or lack of maintenance, but on the design of the engine cooling system, particularly the design of the head gaskets....

How do I unbuckle a seat belt?

To unbuckle a seat belt, simply press the Release button until the latch unbuckles, then remove the belt and allow it to retract fully.

check engine lights wont clear, shifting problems

You did not mention the codes you got? This would help in the diagnosis of the problem for you. The main reason a code will not go away when you try and delete them is the problem is active and...

Related articles

P0016 OBD-II Trouble Code: Camshaft Position A - Camshaft Position Correlation (Bank 1)
P0016 code definition Camshaft Position A - Camshaft Position Correlation (Bank 1) What the P0016 code means P0016 is the OBD-II generic...
P2744 OBD-II Trouble Code: Transmission Fluid Temperature Sensor B Circuit Interm
P2744 means that the transmission is overheating usually caused by low transmission fluid due to leakage or a failing transmission or a bad sensor.
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 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 cylinder. A P2428 trouble code is also associated...