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2002 Ram 1500 P0601 Code: Symptoms, Causes, and Repair Options

Model: Ram 1500 Fault Code: P0601 Posted: 2008-05-18 19:09

I recently purchased a 2002 Ram 1500 4X4 and it has an active fault code P0601. The truck will not start in first gear when shifting into drive or at a stoplight—only if I manually shift it into first gear does it start successfully. This behavior is concerning, especially since the engine light remains on. I'm looking for clarity on what the P0601 code means and whether this issue could lead to further damage. From my research, P0601 typically indicates a PCM (Powertrain Control Module) internal fault or communication error. I want to know if there's a risk of transmission band failure due to continued operation in problematic gear shifts. I'm also curious about the long-term implications: will driving with this code cause damage? Can I still safely tow the truck while the code is active? What are my repair options, and how expensive would a fix be?

Related fault codes

P0601

Comments (5)

Anonymous 2008-05-19 12:30

The P0601 code on a 2002 Ram 1500 suggests an internal fault within the Powertrain Control Module (PCM). If the truck is not starting in first gear when shifting into drive, this could indicate a communication issue between the PCM and TCM. A diagnostic scan using a proper OBD-II tool is recommended to confirm the exact nature of the fault. Before attempting any repairs, consider having a professional perform a full system check—especially since continued operation may lead to transmission band wear or failure.

Anonymous 2008-05-19 17:55

While the year (2002) is helpful, it's important to understand that P0601 specifically points to an internal PCM fault. This code often results from corrupted data or hardware issues within the control module. If your truck has a real OBD-II scan tool connected properly, you should be able to verify communication between the PCM and TCM. Many forums discuss this issue in older Ram 1500 models—checking those resources can provide more targeted solutions.

Anonymous 2008-05-22 16:32

This is a 2002 Ram 1500, which is known to have recurring P0601 issues due to PCM reliability concerns in that model year.

Anonymous 2011-07-16 10:12

I own a 2001 Ram 1500 Magnum with a 5.7L V8 and 4X4. I bought it used, and the engine light has been on for about a year. The truck runs fine and shifts smoothly—no noticeable performance issues. My main concern is whether delaying replacement of the PTC (Powertrain Control Module) will cause long-term damage. Can I still tow safely with this code active? What are my repair options, and how much would it cost to fix it? Thanks for any insight.

Anonymous 2011-07-17 18:35

The P0601 code won't immediately cause engine or transmission damage, but if other fault codes appear later, you may not notice them due to the persistent check engine light. In older Ram 1500 models like this one, repeated PCM failures are common—especially when ignition coil issues coexist. I recommend replacing both the PCM and the ignition coil as a preventive measure to avoid future failures.