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Dodge Durango P1784 Code: Check Engine Light On, Transmission Shift Issues

Model: dodge durango Fault Code: P1784 Posted: 2007-03-13 08:36

The check engine light comes on in my Dodge Durango, and the vehicle feels like it's not shifting properly. I've been experiencing this issue where the truck seems to resist shifting gears. The fault code displayed is P1784, which relates to the transmission control system. When I clear the code, the truck runs normally for a while—however, after about an hour of driving, the check engine light returns and the shifting problem reoccurs. This behavior suggests a potential issue with the transmission control module or sensor. I'm seeking advice on possible causes and solutions for this specific fault code in my vehicle.

Related fault codes

P1784

Comments (3)

Anonymous 2007-03-13 08:38

bishop8155 wrote: I have the same P178

Anonymous 2007-03-13 10:02

Additional details such as model year, engine size, mileage, and recent maintenance history would be helpful in diagnosing this issue. Any work done on the transmission or related systems recently? This could provide valuable context for troubleshooting.

Anonymous 2007-03-14 17:06

I have a 2000 Dodge Durango with a 4.7L V6, 4x4, and currently at 110,000 miles. I purchased it in September 2006 and have performed all minor maintenance myself. The issue starts when I start the truck in the morning—the check engine light comes on. While driving, it feels like the transmission is holding back shifting. After about an hour of driving, the check engine light goes off and the vehicle shifts normally again. The fault code P1784 is related to the manufacturer's transmission control system. When I clear the code, the truck runs fine until the next morning. This intermittent behavior suggests a sensor or control module issue.