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2000 Dodge Ram 1500 - Codes P0601 and P1899: Cranks but Dies at Idle

Model: 2000 dodge ram 1500 Fault Code: P0601 Posted: 2019-07-31 16:51

My 2000 Dodge Ram 1500 cranks fine but occasionally dies at idle. I've been getting diagnostic trouble codes P0601 and P1899. The vehicle will sometimes stall while idling, especially after being driven for a while. It starts again immediately after, then the issue returns intermittently. I have not made any modifications to the vehicle, such as using performance chips or tuning devices. No recent repairs have been done—this behavior started several months ago. Initially, I noticed it dying when in gear, which led me to suspect the P1899 code related to the park/neutral switch. I'm concerned about whether the Engine Control Module (ECM) might be faulty given the P0601 code.

Related fault codes
P0601P1899
Comments (4)
Anonymous 2019-08-01 08:21

The codes you're seeing—P0601 and P1899—are likely what you meant. P0601 indicates a PCM (Powertrain Control Module) internal controller failure, which is a serious issue suggesting potential ECM malfunction. P1899 points to the park/neutral position switch being stuck in gear or park. While P0601 is critical and may indicate a failing control module, it's important to address both codes systematically. Before replacing any components, ensure that all related issues are resolved—especially if one code could have contributed to damage in the PCM. Also, please confirm whether any aftermarket devices (like tuning chips or PROMs) have been installed or connected to the diagnostic port.

Anonymous 2019-08-01 19:21

No modifications or repairs have been performed on this vehicle. The issue began several months ago and initially appeared when the truck was in gear, causing it to die unexpectedly. After restarting, it would run fine for a while before recurring. This intermittent behavior suggests a potential sensor or control module fault.

Anonymous 2019-08-01 19:22

Given the P0601 code, the ECM (Engine Control Module) is likely experiencing an internal failure and may need to be replaced. However, this should only be considered after confirming that all related issues are addressed.

Anonymous 2019-08-02 10:07

It's recommended to first resolve the P1899 code by checking and properly adjusting or replacing the park/neutral position switch. While it may not directly cause the PCM failure, unresolved P1899 could contribute to stress on the ECM over time. Addressing all codes is essential—fixing one issue without resolving others might lead to further damage, especially if the vehicle's electrical system is under strain.