2023 Ram Promaster: sudden loss of power

Filed Sep 11, 2026 · Steering · OH

Total sudden loss of power steering

Filed Jul 27, 2026 · Electrical, Steering · WA

Due to the loss of power steering the tech at Rainier Dodge of Olympia performed electrical testing per diagnostic chart and found water intrusion into steering harness that has corroded wiring from the body harness into electric steering gear motor/module unit. The electric power steering gear assembly and harnesses must be replaced. The vehicle recieved a fault code U0140 stating loss of communication with body control module.

Filed Jul 17, 2026 · Electrical, Steering · CO

While driving, a “Service ESC” warning message appeared and the vehicle suddenly lost power steering assist, causing the steering to become extremely difficult and creating a serious safety risk while the vehicle was in motion. The vehicle was taken to a service center, where technicians found multiple loss-of-communication codes involving the electronic power steering system. Further inspection found the main electronic power steering connector full of water and corroded. The technician documented that water intrusion caused excessive damage to the electronic power steering terminals at the rack-and-pinion assembly. The water intrusion appears consistent with a failure or inadequacy of the sealing intended to protect the electronic power steering connection from moisture. Due to the extent of the corrosion and damage, the affected wiring harnesses and rack-and-pinion assembly had to be replaced, followed by a wheel alignment. This failure resulted in a sudden loss of power steering assist while the vehicle was being driven.

Filed Jun 15, 2026 · Engine, Steering · 33,000 miles · UT

The contact owns a 2023 Ram Promaster 2500. The contact stated that while driving at various speeds, the vehicle lost power steering assist with several unknown warning lights, and the check engine and parking assist warning lights were illuminated. The contact was forced to restart the vehicle to resume normal operation. The vehicle was initially taken to the dealer where the wiring harness was replaced; however, the failure returned soon after the repair. The vehicle was taken back to the dealer where several parts including the steering sensor and steering column were replaced; however, the failure returned weeks later after the repair. The manufacturer was notified of the failure. The vehicle was not repaired and remained with the dealer. The failure mileage was approximately 33,000.

Filed Jun 6, 2026 · Steering · NY

Loss of power steering while driving vehicle at different speeds ( when starting from a stopped position, also at speeds from 20 to 40 mph ) when trying to turn vehicle. Steering wheel pulses and shakes and is extremely hard to turn.