Could be
Low Transmission Fluid level,
Dirty transmission fluid,
Bad shift solenoid(s),
Transmission mechanical problems,
Transmission hydraulic control circuit.
Start with checking the fluid level then a fluid flush.
PX8 - Black, Clear Coat
Assuming you mean P0135, that would be O2 sensor heater circuit malfunction (bank 1 sensor 1). If the wiring to bank 1 sensor 1 is not damaged, it is probably a bad bank 1 sensor 1 O2 sensor. Replace it.
Code 54-No cam signal at the PCM-No camshaft position sensor signal detected during engine cranking.
Code 41 means an open or shorted condition detected in the generator field control circuit
P1131 - Manufacturer control fuel air metering - Swirl Control
Trouble code P0731 means:Gear 1 incorrect ratio
Trouble code p0731 means: A/T Additional Gear Ratio Error In First Gear
Trouble code P0731 means: Incorrect gear ratio, first gear
Trouble code P0731 means:Gear 1 incorrect ratio
Trouble code p0731 means: A/T Additional Gear Ratio Error In First Gear
P0700 EATX code present. P0731 Gear ratio error in first gear.
P0731 Gear I Incorrect ratio
Trouble code P0753 means: Shift Solenoid A Electrical
Trouble code P0753 means: Shift Solenoid A Electrical
Trouble code P0731 means:Gear 1 incorrect ratio
Trouble code P0731 means: Incorrect gear ratio, first gear
A po551 code is power steering pressure sensor circuit malfunfunction