Skip the auto shop - Our mechanics make house calls

Q: Warning code P0340

asked by on

My car is getting code P0340, Camshaft Position Sensor Circuit.

A: The camshaft sensor is a 3 wire sensor. Pow...

The camshaft sensor is a 3 wire sensor. Power and ground need to be checked and the signal wire can be scoped to see if a signal is present as the engine is running. Generally, the camshaft sensor itself is at fault and would need to be replaced, but other possible issues include: faulty wiring, Engine Computer, or a damaged sensor wheel. You may want to enlist the help of a mechanic, such as one from YourMechanic, who will have the tools and expertise to diagnose the camshaft sensor fault and make the repair.

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・Save up to 30%

Get a quote

What others are asking

Q: Cam sensor

The other camshaft sensor is under the air cleaner and near the fuel rail front of the engine, on the side of the head. You have to remove the air cleaner housing for access. If you're unable to find it...

Q: Clutch won't engage. Replaced master cylinder ... Still not working

Hello. I usually start by checking the movement of the clutch slave cylinder when the pedal is pushed in. If the slave cylinder is not moving, then the hydraulic system is at fault, which can be due to air...

Q: Knocking sound in passenger side under dash

Hello there, thank you for asking about your 2008 Mercury Sable. This sounds like it may be related to one of the AC vent doors. These can often times get hung up and create this kind of sound when they...

Related articles

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...