Codes P0725 and P1815 and suggestions on what it might be?

Hello, Dave here, contributing to RepairPal and providing expert advice since 2010. P0725 is a concern with the engine's computer detecting the engine's speed. For some reason, it's getting a faulty reading. This is often caused by a wiring concern or connector concern. P1815 is a concern with the manual shift mode circuit. Both of these codes with need to have active hands on testing performed by a skilled technician to troubleshoot the concern. They are definitely giving you clues as to what is happening and likely are related the symptoms your are experiencing. Seek guidance at a shop near you -- https://repairpal.com/auto-repair-near-me Click the link or call us at 877-913-1554. We'll gladly find you a certified RepairPal shop in your area.