2005 Dodge Ram 2500 Hemi: P0315 and P0339 Codes Explained - What Do They Mean?

Do you know the official definitions of these OBD-II codes? Understanding the exact meaning can help pinpoint the root cause.

I don't have the code definitions memorized. I posted this hoping someone here could explain what P0315 and P0339 specifically mean in a 2005 Dodge Ram Hemi context.

P0315 = Crankshaft Position System Variation Not Learned P0339 = Crankshaft Position Sensor A Circuit Intermittent

These codes are covered in the generic OBD-II code reference articles. I recommend checking the official OBD-II code database or using the forum's search function to find detailed explanations.

I did a search before posting—didn't yield clear answers for my specific model. Does this sound like just a sensor issue, given that my truck still runs? I also noticed a multiple cylinder misfire code. Any thoughts on how these might be connected?

Either the crankshaft position (CKP) sensor is failing or the engine is misfiring severely enough that the Powertrain Control Module (PCM) is struggling to maintain timing, resulting in a correlation error. This is common in many Dodge and Chrysler vehicles.

It sounds like the crank position sensor may be failing. How much would a replacement cost for this part? The ECU isn't receiving a consistent crankshaft pulse signal, which likely means it's running on an emergency mode—this could explain the misfires I'm seeing.

I don’t know the exact price of the sensor in his area or where he might purchase one. Also, there’s not really a full 'emergency' strategy because without crankshaft pulse signal, spark won't occur at all. The engine can start with no camshaft signal but cannot run without a crankshaft signal. Chrysler vehicles are known to generate both cam and crank sensor faults when one fails.

Jeff Compton wrote: I don’t know the exact price of the sensor in his area or where he might purchase one. Also, there’s not really a full 'emergency' strategy because without crankshaft pulse signal, spark won't occur at all. The engine can start with no camshaft signal but cannot run without a crankshaft signal. Chrysler vehicles are known to generate both cam and crank sensor faults when one fails. >Re-sensor cost< OK—thank you for clarifying! But I was really asking the original poster about replacement costs. Regarding the CKP sensor: The code indicates intermittent signal, not complete loss of signal. Under certain intermittent conditions, could there still be enough spark from coil packs to keep the engine running (with misfires)? Or would the ECU ignition strategy become non-functional with an intermittent CKP signal? I know some OBD-II systems will not allow engine restart if the CMP sensor fails. Regards, Aeroman.