Question about 2001 Kia Rio

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2001 kia rio check engine light on, code PO 340 came up:camshaft position sensor malfunction. Is this somewhat simple to do yourself?

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  • Anonymous Apr 10, 2009

    sensor has been changed several times, light keeps coming back on.

  • yadayada
    yadayada May 11, 2010

    this can be caused by a loose cam belt.



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Posted on Jan 02, 2017

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SOURCE: Check engine lite says the Throttle Postion Sensor is Bad

The TPS is usually located on the inlet manifold at the rear of the engine.If you look at where the accelerator cable connects to the throttle housing it should be there. It's held on by 2 torx or hex head screws & has a wiring block connector with 3 wires going in to it. This connector should simply pull off when you squeeze the clasp. You didnt say which engine you have but the TPS is similar across the range. You must make sure the ignition is off when unplugging it otherwise you will generate a fault code in the Engine Managment System. Once replaced switch the ignition on for 5 seconds & then switch off. This should position the sensor ready to start the engine.


Posted on Nov 24, 2008

  • 345 Answers

SOURCE: kia rio 2002 camshaft pos. sensor just replace still light check

check the belt,if its out it will flag up this code,your car will run on sequential firing from the crankshaft sensor,failing that put an oscilloscope on the signal wire at the sensor and ecu its possible the ecu might not be seeing the signal,start with the basics first

Posted on Dec 29, 2008

  • 73 Answers

SOURCE: 2001 saturn sc2 gets code 341&340 camshaft sensor

if you have high resistance in secondary ign. system (plug wires, ign.coil) this will cause this code to set. make sure you are using a high quality spark plug wire set. not from autozone!!! and denso non platinum tipped spark plugs. also use a diaelectric grease on plug wires to keep moisture out.

Posted on Mar 31, 2009

  • 986 Answers


This indicates that a problem was detected in the camshaft position sensor circuit. Since it says circuit, that means the problem could lie in any part of the circuit - the sensor itself, the wiring, or the PCM. Don't just replace the CPS (camshaft position sensor) and think that will definitely fix it.I hope this helps you

Posted on Oct 06, 2009

  • 1757 Answers

SOURCE: Diagnostic code P 340 and P 341 Camshaft Position

The Camshaft Position Sensor tells the PCM (computer) the position of the Camshaft Position. This Sensor sychronized along with several other Sensors including the Crankshaft Position Sensor the firing of the electronics to the spark plugs of each cylinder.
It is not difficult to replace and relatively inexpensive.
1. Disconnect the Negative side of the Battery,
2. Locate the Sensor and unplug.
3. Remove the Position Sensor retaining bolt.
4. Pull out the Sensor.
Replacement is reverse of above order.
Hint: use fresh engine oil on the end/sides of the Sensor especially around the rubber o-ring(s) to ease pushing the Sensor into proper position.

Posted on Nov 18, 2009

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