Pinpoint Test F: Vibration - A High Frequency (20-80 HZ) That Is Felt Through The Seat. Changes With Engine Speed

WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

Normal Operation and Fault Conditions
- Transmission fluid heat exchanger tubes
  - For vehicles equipped with a 3.0L Diesel engine, check the transmission fluid heat exchanger tubes for proper routing and installation. REPAIR or INSTALL new components as necessary. REFER to: Transmission Fluid Heat Exchanger Tubes - 3.0L Power Stroke Diesel .
Possible Sources
- Transmission fluid heat exchanger tubes
Diagnostic steps are not provided for this symptom or DTC. REFER to: Diagnostic Methods