Not every shop works on transmissions, but using a scan tool and regular diagnostic tests can help you find a fault in the electronics that control transmission operation. Follow this Real Fix to see how this Ford Super Duty transmission setting P2703 and P2704 codes was repaired.
Vehicle
2005 Ford Pickup F350 Super Duty 6.0L
Title
Check Engine Light Is On, Replaced Automatic Transmission Pressure Control Solenoid
Complaint
The customer states the check engine light is on.
Cause
Connected a scan tool and found codes: P2703 – Transmission Friction Element “D” Apply Time Range/Performance and P2704 – Transmission Friction Element “E” Apply Time Range/Performance. Used the scan tool to monitor the live data, test drove the vehicle and found the transmission shift pressures were erratic. Used a mechanical pressure gauge and confirmed the erratic pressures were present. Visually inspected the transmission wiring harness and connectors and found no visible faults. The fluid was clean and at the proper level. Disconnected the automatic transmission wiring harness connector, inspected the terminals, and found no faults present. Used a multi-meter to check for the presence of a short in the automatic transmission harness circuits, and found no shorts were present. Used the multi-meter to check for the presence of battery power at the automatic transmission shift solenoid wiring harness connector and found battery power was present. Used the multi-meter to check the continuity of the automatic transmission shift solenoid assembly and found the automatic transmission pressure control solenoid was intermittently electrically open when the solenoid was tapped on to simulate road shock. The tests indicated the automatic transmission pressure control solenoid was faulty.
Correction
Replaced the automatic transmission pressure control solenoid, cleared codes, performed a road test and verified the vehicle operated properly. The check engine light did not illuminate and no fault codes returned.
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