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2003 Dodge Dakota 3.9L 4x4 P0100 Fault Code: CKP Sensor Issue and Diagnosis

Model: 2003 Dakota Fault Code: P0100 Posted: 2016-08-27 12:24

I'm experiencing a P0100 fault code on my 2003 Dodge Dakota 3.9L 4x4. Does anyone else have a P0320 code or any other related diagnostic trouble codes? The vehicle is stock—no aftermarket chips, performance modules, or devices connected to the ECU. I've cleared the codes previously, but they haven't returned since. I'm trying to determine if this is a sensor issue or a deeper system problem. Can anyone recommend checking live data or freeze frame information with a proper scanner? I have an enhanced scanner and can provide live data if needed—however, the vehicle lacks an IAT sensor, so IAT readings are not available.

Related fault codes
P0100
Comments (7)
Anonymous 2016-08-27 13:13

No additional codes have returned. Previously there were many codes, but after clearing them, none have reappeared.

Anonymous 2016-08-27 14:48

This is a stock vehicle—no modifications, no ECU programmers or aftermarket devices connected to the ALDL system. I'll provide an update after lunch tomorrow (note: this was originally scheduled for a weekday lunch but it's actually Monday).

Anonymous 2016-08-28 06:08

Yep, all stock with only 58,000 original miles! He got an awesome deal if I can get it running well for him. My son is only 12 but wanted this truck and he had the money sooooo.

Anonymous 2016-08-28 11:03

Do you have a professional scanner? Can you access live data or freeze frame information? This code is an enhanced P0100, not a generic one—so detailed diagnostics are essential.

Anonymous 2016-08-28 13:23

I use a pro-grade scanner. No freeze frame data has been recorded (as expected for an enhanced code). Live data shows no IAT readings because the vehicle does not have an IAT sensor installed.

Anonymous 2016-08-28 13:24

I own two different scanners, and both show consistent results—this increases confidence in the diagnosis.

Anonymous 2017-01-06 17:39

The original crankshaft position (CKP) sensor was faulty. Replacing it with a factory-original unit resolved the issue. The old PCM failed to detect the root cause, but the new one did—this was very frustrating at first.