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Engine-Codes.com | All About OBDII Engine Codes

P0733 KIA

P0733 KIA - Third Gear Incorrect Ratio

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P0733 KIA Comments |  Add Comment
Possible causes
- Low transmission fluid level
- Dirty transmission fluid
- Shift solenoids
- Transmission mechanical problems
- Transmission hydraulic control circuit
Help with Possible causes What does this mean?
Tech notes
Start by inspecting the transmission fluid level and condition, and change fluid if necessary.
Help with Tech Notes What does this mean?
When is the code detected?
P0733 is detected when A/T cannot be shifted to the 3rd gear position even if electrical circuit is good.
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Incorrect transmission shifting
P0733 KIA 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

If the actual gear position is higher than the position (3rd) supposed by TCM, the slip ratio will be more than normal. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction.

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