P0736
Reverse Incorrect Ratio
The TCM detected a ratio mismatch in reverse — likely a stuck solenoid, slipping clutch, or worn band.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Common causes
Ordered by how often each turns out to be the cause.
- Shift solenoid stuckCommon
- Reverse clutch/band wornPossible
Parts involved
- Automatic Transmission
- Shift Solenoid
P0736 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.