P0731Ram 1500Years: 1996 - 2026
Incorrect 1st Gear Ratio
Reviewed by ASE Certified Technician
What does this mean?
Code P0731 indicates the actual gear ratio does not match the expected ratio for 1st gear.
Disclaimer: This diagnostic code is part of the standard OBD2 system and can apply to Ram 1500 models manufactured from 1996 to 2026. However, please note that the presence of this specific code depends on your vehicle's exact engine configuration, options, and production year.
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Common Causes
Low, dirty, or burnt transmission fluid
Faulty transmission shift solenoid
Worn or faulty transmission valve body
Faulty torque converter or lockup clutch
Clogged transmission filter
Symptoms to Watch For
- Check Engine Light is illuminated
- Transmission slipping between gears
- Hard or harsh gear shifting
- Transmission stuck in one gear
- Transmission hunting or cycling between gears