Engine

DTC P0758: SHIFT SOLENOID SL2
Circuit Description
Shifting from 1st to overdrive is performed in combination with on and off cycle of shift solenoids SL1 and SL2. Solenoids are controlled by ECM. If an open or short circuit occurs in either solenoid, DTC will set. ECM controls remaining shift solenoids to allow vehicle to operate and ensures smooth transaxle shifting. ECM checks for an open or short circuit when solenoid is energized (duty cycle exceeds 75 percent), and when solenoid is not energized (duty cycle is less than 3 percent). Possible causes are:

†Open or short in solenoid circuit.
†Shift solenoid malfunction.
†ECM malfunction.

DTC P1760: SHIFT SOLENOID SLT
Circuit Description
Throttle pressure applied to primary regulator valve, which modulates line pressure, causes shift solenoid SLT to precisely and minutely modulate and generate line pressure according to accelerator pedal effort, or engine power output detected. This reduces line pressure and provides smooth transaxle shifts. Upon receiving throttle valve opening angle signal, ECM controls line pressure by sending a predetermined duty cycle to shift solenoid SLT, modulating line pressure and generating throttle pressure. Duty cycle is ratio of period of continuity in one cycle. Shift solenoid SLT is located on transaxle valve body. DTC will set if voltage at ECM terminal SLT- is zero volts or 12 volts for one second or more. Possible causes are

†Open or short in solenoid circuit.
†Solenoid malfunction.
†ECM malfunction.

DTC P0171 : SYSTEM TOO LEAN

Circuit Description
Fuel trim refers to feedback compensation value compared against basic injection time. Fuel trim includes short-term and long-term fuel trim. If total of short term fuel trim value and long term value is within 25 percent, system is functioning properly. DTC P0171 is set when fuel trim is rich beyond a certain value. Possible causes are:

†Exhaust system leak.
†Air intake hose loose.
†Fuel line pressure.
†Injector blockage.
†Faulty Mass Airflow (MAF) sensor.
†Faulty Engine Coolant Temperature (ECT) sensor.
†Faulty A/F sensor.

DTC P1133 : AIR/FUEL SENSOR CIRCUIT RESPONSE MALFUNCTION

Circuit Description
Air/Fuel (A/F) sensor monitors exhaust gas oxygen content and delivers an input signal to ECM. ECM uses input signal to control air/fuel ratio. A/F sensor includes a heater. DTC is set when A/F sensor output does not change with engine speed at 1400 RPM or more with vehicle speed at more than 38 MPH. DTC P1133 is for bank No. 1 A/F sensor.

Possible cause is:
†Faulty A/F sensor.

I would start with DTC P1133. If the sensor is bad, it can cause idlng and other issues.

Nobody does it better than the manufacturer as the recpommended fluid is specifically formulated for the transmission when it was designed.

You're welcome.

Have a nice day.

Have a scan done to check if there are any trouble codes. Harsh shifting can be due to bad engine mounts but symptoms does not indicates so.

Since the trans fluid has just been replaced, run around and hope it clears up something and shifting improves.