I need some help p0300 p0135 p0144 p0452 p1133 please

Question

Got a obo code reader and its pops up as p0300 (misfire) p0135 (o2 sensore x2) p0144 (o2 x1) p0452 (fuel presser sensor) and a p1133 (h02) theres times when i start my truck it take serval time but then again theres times it starts up like a charm this just started about 2 2 in a half weeks ago. Can anybody help me here if it helps i did have to change my fuel pump in january

Answer 1

P0300 Random misfire

P0135 H02S heater performance Bank 1 Sensor 1

P0144 H02S circuit high voltage Bank 1 Sensor 3

P0452 Fuel tank pressure sensor circuit low

P1133 H02S insufficient switching Bank 1 Sensor 1

When the code set , and P0452 is also set, this would affect the performance of the MAP sensor, what happens is the MAP sensor and the FTP shares a 5 volts reference, If the FTP brings its 5 volts reference low the MAP performance is affected, and as a result you would end up with the 02 sensor codes and  a performance with the engine.

​ 2 area that need to be closely inspected, the FTP and the MAP sensor, if the vehicle has a hard time staring and P0452 is setting, test the MAP 5 volts reference  and suspect the MAP sensor