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DTC - Diagnostic Trouble Codes information

P0733

Powertrain Codes

P0733 - NISSAN - 3rd. Gear Malfunction

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

P0733 is detected when A/T cannot be shifted to the 3rd gear position even if electrical circuit is good.

Tech Notes

There is a Nissan bulletin for the following models: 1995-1996 Nissan Maxima 1995-1997 Nissan Sentra/200SX 1996-1997 Nissan Truck 1995-1997 Nissan Altima 1996-1997 Nissan Pathfinder 1995-1996 Nissan 240SX 1996-1997 Nissan Quest Nissan Service Bulletin OBDII Code 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 (1st) supposed by TCM, the slip ratio will be more than normal. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction.