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P1203 Engine Trouble Code

P1203 Engine

When you check engine light came on code P1203 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However your vehicle's manufacturer may have a different definition for the P1203 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

P1203 code can be about replacing a broken oxygen sensor can eventually lead to a busted catalytic convertor which can cost upwards of $2,000. Taking your car into a shop will cost you around $200 depending on the car. However, an oxygen sensor is easy to replace on many cars and is usually detailed in the owner's manual. If you know where the sensor is, you only have to unclip the old sensor and replace it with a new one. Regardless of how you approach it, you should get this fixed right away.

P1203 Code Meaning :

P 1 2 0 3
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine Fuel And Air Metering Ambient Air Temperature Sensor Circuit Low Cylinder 10 Contribution/balance Fault Shift Solenoid E Performance or Stuck Off

Regarding the P1203 code, it would probably be worthwhile to carefully inspect the wire harness near the intake manifold bracket. This is done most easily from below the car in the area near the oil filter.

P1203 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P1203 OBD-II Trouble Code Injector Circuit Open / Shorted Cylinder #3 is one of the definitions for the P1203; however your vehicles manufacturer may have a different definition for the P1203 code. Please check below for your P1203 code.

Reason For P1203 Code

The reason of P1203 OBD-II Engine Trouble Code is Ambient Air Temperature Sensor Circuit Low.

P1203 code on vehicles with electronically controlled automatic transmissions, the 3-4 shift solenoid is responsible for actuating the hydraulic circuits to activate clutches or bands that change gears inside the automatic transmission.