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

P0736 is detected when A/T cannot be shifted to the reverse gear position even if electrical circuit is good.

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