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2012 Jeep Wrangler Unlimited Sport 3.6L 1st Gear
Hello All, THis Jeep has a fault in the TCM P0731 Gear Ratio Error in 1st. I have checked all the wiring. The jeep has 35 12.50 18 wheels and tires. I dont know if that affects the Pinion Factor. If it does what should the pinion factor be? I am far from a...
Summary posted 8/22/2025
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Related Documents & Media | VIN | 1C4BJWDG9C |
| Engine | 3.6 L / 6 cyl / GAS |
| Trans | 5-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Affected | 1st Gear |
| Conditions | Incorrect Ratio |
Message Closed w/Summary
Vehicle Data
2012 Jeep Wrangler Unlimited Sport
| VIN | 1C4BJWDG9C |
| Engine | 3.6 L / 6 cyl / GAS |
| Trans | 5-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Affected | 1st Gear |
| Conditions | Incorrect Ratio |
Video