Logo

P1543 Engine Trouble Code

Meaning of P1543 engine trouble code is a kind of powertrain trouble code and when your car's 'P1543 Check Engine' light comes on, it's usually accompanied by a sinking feeling in the pit of your stomach. The light could mean a costly problem, like a bad catalytic converter, or it could be something minor, like a loose gas cap. But in many cases, it means at minimum that you'll be visiting the car dealer to locate the malfunction and get the light turned off.

P1543 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 P1543 code is occuring now you should check P1543 repair processes.
Now don't ask yourself; What should you do with P1543 code ?
The solution is here :

P1543 Possible Solution:

P1543 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.

P1543 Code Meaning :

P 1 5 4 3
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine Fuel And Air Metering Fuel Composition Sensor Circuit Malfunction Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector) Exhaust Gas Recirculation Sensor B Circuit High

Is the fuel pump sometimes not priming when you turn the key to ON(II)? Start by measuring the fuel pressure and checking whether you have bright white-bluish spark at all four plugs. The mechanical timing is also something that you should check, as we mentioned above.

P1543 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P1543 OBD-II Trouble Code A/C System Performance is one of the definitions for the P1543; however your vehicles manufacturer may have a different definition for the P1543 code. Please check below for your specific make. P1543 code.

Main reason For P1543 Code

The reason of P1543 OBD-II Engine Trouble Code is Fuel Composition Sensor Circuit Malfunction.

P1543 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.