P1740 Diagnostic Code Explanation for 2001 Dodge Ram 1500 - Overdrive and TCC Issues at 63,000 Miles
Hi everyone! I'm having trouble understanding the P1740 diagnostic code on my 2001 Dodge Ram 1500. The truck has 63,000 miles and is shifting fine under normal conditions, but it frequently kicks in and out of overdrive—especially during short trips. I'd like to know what the '40' in P1740 specifically refers to. Does this point to a particular component such as the Torque Converter Clutch (TCC) or the Overdrive solenoid? Is it safe to keep the Overdrive switch off for short-distance driving, or should I leave it on? Given that the transmission shifts smoothly otherwise, could the TCC be failing already? Any insights into common causes like governor pressure sensor failure, TPS issues, or a stuck check valve in the cooler lines would be greatly appreciated. Thanks in advance!
The P1740 code typically indicates an issue with the overdrive solenoid or transmission control system. While the TCC can be involved, this specific code is more commonly linked to problems in the overdrive solenoid or governor pressure sensor. A stuck check valve in the transmission cooler lines can also cause erratic overdrive behavior and may lead to damage if not addressed early. It's recommended to have a qualified transmission technician inspect the system before further issues arise.