2005 Dodge Ram 1500 P0700 Code: Transmission Stalls at 25mph After Fluid Change
I own a 2005 Dodge Ram 1500 with a 5.7L V8 engine and am experiencing transmission issues. I recently had the transmission fluid changed about two weeks ago at Lube Express, and since then, I've noticed problems. Using an OBD2 code reader, I'm getting a P0700 diagnostic trouble code related to the transmission system. The truck drives normally but begins to over-rev when approaching 25 mph and fails to shift into the next gear. All other gears—such as reverse, first, second—are functioning correctly. I'm seeking advice on what this code might indicate and how to resolve it.
The P0700 code indicates a transmission control system fault, which may be due to manufacturer-specific or enhanced codes not detected by basic scanners. Please ensure your vehicle is re-scanned using a professional-grade OBD2 scanner capable of reading 'manufacturer-specific' and 'enhanced' diagnostic codes. Additionally, verify that Lube Express used the correct transmission fluid as specified in your Owner's Manual—this information should be listed on your service invoice. Once you've confirmed these details, please update us with your findings so we can assist further.