P0340 CODE COMES UP,SENSOR REPLACED CODE STILL COMING BACK.IF ENGINE IS REVED ABOVE 1500 DASH LIGHT GOES OUT BUT WHEN ENGINE IDLES DASH LIGHT COMES BACK ON.

Trying to figure out how to reset the check engine light on your RAM 1500? You can use the following three-step process to get the job done in no time:

• Find your battery under the hood and disconnect the black/negative cable.
• Wait 20 minutes for the power reserve to expire. The RAM 1500 check engine light should reset automatically during this time.
• Now, just reconnect the black/negative cable. You're ready to get back to work.

If your check engine light is still on after you've gone through these steps, you may need to drive for 50 miles or so in order to reset the computer. If this short driv

this is code p0340
P0340 Camshaft Position Sensor Circuit Malfunction and this is p0345
P0345 Camshaft Position Sensor Circuit Malfunction Bank 2 problem can be the sensor --but this is circuit so sensor --wiring -harness --connections etc ---and if your at dealer ask them also about your codes

Two things can make the bat light come on at idle but go off above idle.
The belt could be slipping because it is not tight, or glazed, or the alternator could be defective.
Once the engine starts, the alternator should be making enough current to "turn the light off". The light is grounded thru the alternator until it is charging, which reverses that circuit and kills the ground source for the light.
If you are sure the belt is ok, I would have the alternator bench tested, because usually if the belt is slipping it slips more at higher speeds.

http://www.therangerstation.com/tech_library/camshaft_position_sensor.shtml

P0340 code means "Something" is wrong in the timing...
from CMP (Camshaft Position sensor) to the crankshaft bolt.

Very first thing, verify connectors are clean and shiny.
clear all codes, even hard codes.

check your idle control valve and sensor may need replacement

p0130 is an oxygen sensor code.
p0340 is your camshaft position sensor code
p0336 is your crankshaft position sensor code

as far as the p0130 code those usually are what i call neglected sensors that do not get replaced when they should be. this sensor is expensive but worth the money as it will help on fuel mileage.

on to the camshaft position sensor, i would start here with this. replace that sensor and when you are replacing it, inspect the sensor and make sure the electrical wires going into it are in good shape. after replacing those 2 sensors, go to a parts store who can erase your codes to turn the light off and then let us know if it comes back on and then we will go from there on the repair.

Clean the Idle Air Control Valve. It's on the throttle body below the Throttle Position Sensor. Worked for me! Good luck.

Have you had the truck scanned for codes? If so, what was the code, codes? Why did you replaced those listed parts. Can you hear any hissing noise coming from the engine or engine compartment?