2013 Nissan Murano Struggling to Accelerate: CVT Transmission Diagnosis and Replacement at PROFIX in Norman, Oklahoma

A 2013 Nissan Murano with more than 180,000 miles came into our PROFIX Auto Repair location on Rambling Oaks Drive in Norman with a check engine light and serious drivability problems. The vehicle was struggling to reach speeds above 30–40 mph, and our technicians needed to determine what was causing the trouble.

Diagnosing the Transmission Problem

Our technicians began by scanning the vehicle's computer systems and found several transmission-related trouble codes, including P1777 and P1778, associated with the CVT step motor.

But a trouble code doesn't always mean the component itself has failed.

The team inspected the electrical connections, checked wiring resistance, and identified an issue with the transmission wiring and connector. After addressing that problem, further testing showed that the underlying transmission issue remained.

Testing directly at the transmission connector revealed that the internal step motor was reading outside specifications. This confirmed an internal CVT transmission failure rather than simply an external wiring problem.

Replacing the CVT Transmission

With the diagnosis established, the next step was replacing the failed transmission.

Our technicians removed the original CVT assembly and installed a remanufactured replacement transmission. The job also included associated seal work, transmission fluid service, and a transmission cooler flush.

Replacing a CVT transmission is a significant repair, and getting the diagnosis right beforehand is important. In this case, our technicians followed the evidence, ruled out an external wiring problem as the remaining cause, and confirmed that replacement of the transmission assembly was necessary.

Transmission Repair at PROFIX Auto Repair

This Nissan Murano is a good example of why proper diagnostics matter before undertaking a major repair. By checking the electrical system and testing the transmission directly, our technicians were able to identify the underlying problem and determine the necessary repair.

Is your vehicle struggling to accelerate, hesitating, shifting improperly, or showing a check engine light? Don't wait for a small drivability problem to leave you stranded.

At PROFIX Auto Repair, we take the time to find out what's actually wrong before recommending repairs. From transmission diagnostics to complete transmission replacement, our technicians are here to help you get back on the road.

With two convenient locations in Norman, professional auto repair is just a click away. Choose your preferred PROFIX location below and schedule your appointment today!

Local Care.  Professional Repair.

PROFIX Auto Repair – West

1121 Rambling Oaks Dr

Norman, OK 73072

📞 (405) 310-2279

🕒 Monday–Friday: 7:30 AM – 5:00 PM

Leon’s PROFIX Auto Repair – East

521 N Porter Ave

Norman, OK 73071

📞 (405) 364-2799

🕒 Monday–Friday: 7:30 AM – 5:00 PM