Transmission Mechanical Failure - First and Second
Findings, check these first
- Failed forward clutch
- Broken intermediate band or servo
- Low line pressure
- Valve body failure
- Severely degraded transmission fluid
Standard procedure
- Limit driving to prevent more damage
- Check the fluid condition for debris
- Test line pressure
- Confirm which gears are lost, first and second
- Overhaul the transmission
- Clear the code and retest to confirm first and second return
Code lookup
Type a code above, or start from a symptom or a common code.
Press / to jump to the box. Ford-enhanced powertrain, body, chassis and network codes. Generic P0xxx codes live on OBD Codes List.
Sources and review
Review: checked against the recorded source material.
- OBDII.pro: P1785 Ford definition
live reference page (obdii.pro)
Supports: Ford-family meaning for P1785: Transmission Mechanical Failure - First And Second
Fetched directly. obdii.pro is a publisher independent of the engine-codes family.
- P1785 FORD Code: Meaning, Causes, and Symptoms | OBD2 Codes
live reference page (obd2-codes.co)
Supports: Ford meaning for P1785: Transmission System First or Second Gear Fault Conditions
Fetched directly. obd2-codes.co phrasing matches the engine-codes family, so it counts as one publisher.
Last updated 2026-10-10.
Report a correction for P1785. Include your vehicle, the issue and a source if you have one.
Related Transmission codes
- P1709Park/Neutral Position Switch Out of Self-Test Range
- P1711Transmission Fluid Temperature Sensor Out of Self-Test Range
- P1747Electronic Pressure Control Solenoid Short Circuit
- P1754Coast Clutch Solenoid Circuit Malfunction
- P1780Transmission Control Switch Out of Self-Test Range
- P1783Transmission Over-Temperature Condition