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P1123 Engine Trouble Code

Meaning of P1123 engine trouble code is : P1123 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.

P1123 Possible Solution:

P1123 Engine

Gasoline engines use spark plugs to cause an explosion of fuel within the cylinder. In a properly timed engine, this explosion occurs at the proper moment to send the piston to the bottom of the cylinder and provide power to the drive shaft. If the plug wires are out of sequence, the explosion occurs at the wrong time. The improper timing of the explosion sometimes pushes the cylinder the wrong direction or interferes with the turning of the crank. As a result, the engine stutters or backfires, if it runs at all.

P1123 Code Meaning :

P 1 1 2 3
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine Fuel And Air Metering Fuel Rail/System Pressure - Too High Turbocharger Boost Sensor A Circuit Low Exhaust Gas Recirculation Sensor B Circuit High

Regarding the P1123 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.

P1123 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P1123 OBD-II Trouble Code Throttle Position Sensor In Range But Higher Than Expected is one of the definitions for the P1123; however your vehicles manufacturer may have a different definition for the P1123 code. Please check P1123 code.

Reason For P1123 Code

The reason of P1123 OBD-II Engine Trouble Code is Fuel Rail/System Pressure - Too High.

P1123 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.