Just had front section of my exhaust replaced on hyundai matrix ,garage said i req new sensor as they could not refit existing sensor as it was threaded can old part be rethreaded or is new one req

Early airbag (or SRS) systems used only one sensor but later vehicles used several sensors possibly daisy-chained together, at least one of which would be fixed to the front bulkhead behind the dashboard...

code p 0131 refers to heated oxygen (HO2S) sensor 1 bank 1 ---low voltage ===causes --exhaust leak--wiring short to ground ---HO2S sensor ---ECM
the HO2s) is the sensor in the exhaust manifold before the cat converter and bank 1 is closest to the fire wall
the exhaust leak could be in the mesh covered section of the exhaust pipe from the manifold to the cat converter as they crack and that will throw out the HO2s reading back to the ECM

Are there any fault codes to indicate the problem?

Sounds like the new clutch was not lined up properly before refitting! If it was done at a garage return it to have the clutch taken out and refitted properly by them! Or did you do it yourself?

Hello, there are two sensors, one is the air/fuel ratio sensor which is in the pipe between the exhaust manifold and the catalytic converter and the oxygen sensor which behind the cat converter in the exhaust pipe, The most common fault is the front sensor but it depends on what the diagnostic code number is to be more specific.

no
there is no calibration process required for the sensor
if the brakes are still binding on the calliper that you have worked on, it is most probably from the sections seized on the pins that should be free to allow the calliper body to self centralize over the disc rotor
the main body is attached to the stub axle and the second section is free to move on 2 pins and can be pulled apart from the main body if the pins are not seized up
take it to an accredited brake specialist shop for a proper diagnosis

If the problem was fixed by the new sensor the light would go off by itself, so you still have a fault in the system to find.

On the SOHC engine the front (A/F) oxygen sensor is located in the front section of the front catalytic converter. The rear oxygen sensor is located in the rear section of the front catalytic converter. On the DOHC engine the front oxygen sensor is located in the front section of the exhaust system, just past the crossover pipe. The rear oxygen sensor is located in the front section of the catalytic converter.

Oxygen sensor location-Baja 2.5L SOHC engine


Oxygen sensor location-Baja 2.5L DOHC engine



On the 2.0L engine the front (A/F) oxygen sensor is located in the front section of the exhaust system, just past the crossover pipe. The rear oxygen sensor is located in the front section of the rear catalytic converter. On the 2.2L engine the front (A/F) oxygen sensor is located in the front section of the front catalytic converter. The rear oxygen sensor is located in the rear section of the rear catalytic converter.

Oxygen sensor location-Impreza 1998-2001 2.2L engine



Oxygen sensor location-Impreza 1998-2002 2.5L SOHC engine

I hope helped with this; remember rated this help. Good luck.

an acceleration sensor is normally used on airbag systems, it senses the deceleration of the vehicle, reqs replacing after an accident or a fault in the sensor

P 0151 oxygen sensor 1, bank 2 - low voltage
Cause- Exhaust leak, wiring short to earth

P0650- Malfunction indicator light

P1166 & P1167 these codes do not exist, if you check these numbers I may be able to assist you further.