The Lemon IndexFirst gear isn't matching the expected engine-to-wheel speed, which usually means slipping in that gear.
Fix soon. Book a shop visit this week. Stop driving if the car slips, shakes, overheats or warns you.
Low or burnt fluid. Then: worn clutches; solenoid or valve body fault.
Owners named P0731 in 33 complaints to the U.S. government, most often on the Ford F-Series.
Models that report it most
Complaints that name P0731, by model. Raw counts, not a failure rate: popular models get more complaints. Tap a model for its years, mileage and what owners say fixed it.
P0731 by model: P0731 Ford F-Series (11)
Years owners report it on most: 2022 Ram pickup · 2013 Ford F-Series · 2012 Ford F-Series · 2011 Ford F-Series
Transmission problems by year: Ford F-Series · Ram pickup · Ford Escape · Chrysler Town & Country · Ford Mustang
The details
What P0731 means
First gear isn't matching the expected engine-to-wheel speed, which usually means slipping in that gear.
Can I drive with P0731?
Fix soon. Book a shop visit this week. Stop driving if the car slips, shakes, overheats or warns you.
15% of the owner complaints that name P0731 also say the car loses power or goes into limp mode. A complaint can describe more than one problem, so this doesn't prove the code caused it.
Common causes of P0731
- Low or burnt fluid
- Worn clutches
- Solenoid or valve body fault
A shop should confirm the cause with a scan and tests before replacing parts.
What owners describe
- Loses power or goes into limp mode: 15% of complaints
- Transmission slips or shifts hard: 15% of complaints
- Stalls or shuts off: 9% of complaints
- Won't start or hard to start: 6% of complaints
Share of complaints naming the code whose text also mentions each problem.
Model years that report P0731 most
2022 Ram pickup (6), 2013 Ford F-Series (4), 2012 Ford F-Series (3), 2011 Ford F-Series (2).
Related codes
P0730 P0732 P0733 P0734 P0735 P0736 P0729 P0725
Quick answers
What does P0731 mean?
Gear 1 Incorrect Ratio. First gear isn't matching the expected engine-to-wheel speed, which usually means slipping in that gear.
Can I drive with P0731?
Fix soon. Book a shop visit this week. Stop driving if the car slips, shakes, overheats or warns you.
What causes P0731?
Low or burnt fluid; Worn clutches; Solenoid or valve body fault.
Counts: NHTSA owner complaints whose text names P0731. A complaint is an owner's report, not a diagnosis. Meanings: the standard SAE J2012 definitions in our own words; manufacturer codes only where verified for that make. General information, not repair advice for your car.