P0734 Ford

Ford P0734 OBD-II Trouble Code Definition:

P0734 Gear 4 Incorrect Ratio

P0734 Ford OBD-II Trouble CodeDescription:

OBD Trouble Code P0734
Gear 4 Incorrect Ratio
What does the code mean? OBD-ii Code P0734 definition:
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 If the actual gear position is higher than the position (4th) supposed by TCM, the slip ratio will be more than normal. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction.
Symptoms Sumptoms of OBD code P0734
– Engine Light ON (or Service Engine Soon Warning Light) – Incorrect transmission shifting
Causes Causes of the OBD-II code P0734
– Low transmission fluid level – Dirty transmission fluid – Shift solenoids – Transmission mechanical problems – Transmission hydraulic control circuit The Error code is generally activated on detection of the following conditions: P0734 is detected when A/T cannot be shifted to the 4th gear position even if electrical circuit is good.