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P1143 Engine Trouble Code

Meaning of P1143 engine trouble code is a kind of powertrain trouble code and P1143 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.

P1143 Fault Symptoms :

  1. Check engine light comes on
  2. Engine stalling or misfiring
  3. Engine performance issues
  4. Car not starting
If one of these reasons for P1143 code is occuring now you should check P1143 repair processes.
Now don't ask yourself; What should you do with P1143 code ?
The solution is here :

P1143 Possible Solution:

P1143 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.

P1143 Code Meaning :

P 1 1 4 3
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine Fuel And Air Metering Fuel Rail/System Pressure - Too High Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector) Exhaust Gas Recirculation Sensor B Circuit High

Regarding the P1143 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.

P1143 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P1143 OBD-II Trouble Code Heated Oxygen Sensor 1 Lean Shift Monitoring Bank 1 is one of the definitions for the P1143; however your vehicles manufacturer may have a different definition for the P1143 code. Please check below f P1143 code.

Main reason For P1143 Code

The reason of P1143 OBD-II Engine Trouble Code is Fuel Rail/System Pressure - Too High.

P1143 DTC specifically refers to the camshaft (cam) timing. In this case, if the cam timing is over-retarded, the engine light will be illluminated and the code will be set.