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2000 Dodge Ram Van 2500 P0601 Code: How to Fix Internal Control Module (PCM) Issue at Low Cost

Model: Dodge Ram Fault Code: P0601 Posted: 2015-02-27 09:06

I own a 2000 Dodge Ram Van 2500 with a 5.2L engine and over 190,000 miles. I'm currently experiencing the P0601 diagnostic trouble code, which indicates an internal control module (PCM) issue. After researching, I've found that this error has occurred twice in my vehicle—both times after replacing the PCM/ECM. The dealership is asking $1,100 for a new or flashed PCM, which seems extremely high given that the vehicle runs normally and only shows a check engine light. The P0601 code does not affect performance, fuel efficiency, or drivability—only triggering the warning light. I'm looking for affordable alternatives such as remanufactured or refurbished PCM/ECM units compatible with my 2000 Dodge Ram Van (part number R6040368AH). I've also learned that aftermarket modifications like remote starters or alarms could potentially contribute to this issue, but my vehicle is stock and originally purchased from a dealer in 2002. I'm considering purchasing a remanufactured OBDII PCM from vendors like Arc Autos (around $310 including shipping) and will test it. If the P0601 persists, I plan to have a diesel/truck specialist inspect the vehicle for voltage issues—particularly ground connections or low power supply—which are common causes of PCM malfunction. Any insights on how to verify if the issue is hardware-related or software-based would be greatly appreciated.

Related fault codes

P0601

Comments (4)

Anonymous 2015-02-27 10:16

The $1,100 price from dealerships is indeed very high. Consider searching online for remanufactured PCM/ECM units—many are available through reputable vendors. Before replacing the module, check if there were any prior issues or symptoms before failure. Was the vehicle stock? Any aftermarket parts installed (e.g., alarms, remote starters)? Most PCM failures stem from poor grounding or voltage fluctuations. Vendors typically require the old unit to transfer data for proper programming—be sure to confirm this with them. Please share your progress—it will help others facing similar issues.

Anonymous 2015-02-27 20:02

I've had two PCM replacements since buying the vehicle in 2002, and both resulted in the same P0601 code. The second module lasted 15 months before failing—its check engine light has been on continuously since 2008. I’ve removed the bulb to avoid seeing it. The vehicle performs perfectly otherwise. I've been using inspection waivers until North Carolina tightened regulations this year. I'm now consulting a trusted truck and diesel mechanic who can test voltage levels. My experience suggests that faulty ground connections or low voltage supply are common causes of PCM instability. This is especially true in older diesel trucks like mine.

Anonymous 2015-02-28 13:12

You mentioned the check engine light has been on since 2008—what was the actual diagnostic code during that time? Was it only P0601, or were there other stored codes? A full scan should retrieve all historical trouble codes. Also, have any aftermarket systems (like alarms, remote starters, or auxiliary electronics) been added to the vehicle? These can interfere with PCM operation and may be worth investigating before replacing the module.

Anonymous 2015-02-28 13:46

Kev2: Exactly—every inspection cycle brings back P0601. The truck is completely stock, purchased from a dealer in 2002. For the first four years, the PCM worked flawlessly. Since then, the P0601 has appeared without any performance issues—only the check engine light. I found a remanufactured OBDII PCM on Arc Autos for about $310 including shipping. If that unit still produces the P0601 code, I’ll proceed with voltage tracing and ground testing. Thanks for the advice—it’s been very helpful!