Check Engine Error - P0113 / P0135 codes

[athlon64]

What's your car? I would check the connections to the sensors first, and go from there. If it persists, I would ask the mechanic how he did the job. Sometimes, sensors can be sprayed with electronic contact cleaners, but if doesn't work, you need to replace them. I would be wary of the mechanic who touched your car though having brought in a perfectly working car, and driving out with some kind of problem.

Honda City IDSI 2004 Manual yung car ko. Baka may idea kayo sa engine check codes.
Eto yung lumabas sakin:
P0113 - Intake Air Temperature Circuit High Input
P0135 - Oxygen O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)