P0736
Powertrain Codes
P0736 - FORD - Incorrect Reverse Gear Ratio
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light) - Incorrect transmission shifting
Possible Causes
- Low transmission fluid level - Dirty transmission fluid - Shift solenoids - Transmission mechanical problems - Transmission hydraulic control circuit
When Detected
Transmission in reverse and the ECM detected an incorrect gear ratio
Tech Notes
Start by inspecting the transmission fluid level and condition, and change fluid if necessary.
Description
This diagnosis monitors actual gear position by checking the torque converter slip ratio calculated by Transmission Control Module (TCM) as follows: Torque converter slip ratio = A x C/B A: Output shaft revolution signal from revolution sensor B: Engine speed signal from Engine Control Module (ECM) C: Gear ratio determined as gear position which TCM supposes