Possible causes

– Low transmission fluid level
– Dirty transmission fluid
– Shift solenoids
– Transmission mechanical problems
– Transmission hydraulic control circuit

Tech notes

Start by inspecting the transmission fluid level and condition, and change fluid if necessary.

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.

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)
– Incorrect transmission shifting

P0733 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.

P0733 Information for specific makes

P0733 ACURA
P0733 AUDI
P0733 BMW
P0733 CHRYSLER
P0733 DODGE
P0733 FORD
P0733 HONDA
P0733 HYUNDAI
P0733 INFINITI
P0733 JEEP
P0733 KIA
P0733 LAND-ROVER
P0733 LEXUS
P0733 MAZDA
P0733 MITSUBISHI
P0733 NISSAN
P0733 SATURN
P0733 SUBARU
P0733 SUZUKI
P0733 TOYOTA
P0733 VOLKSWAGEN