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P1556 Engine Trouble Code

Meaning of P1556 engine trouble code is a kind of powertrain trouble code and P1556 if your catalytic convertor fails completely, you eventually won't be able to keep the car running. Your gas mileage will also be terrible, so you should try and fix it as soon as you can. Unfortunately, the average replacement cost is around $2,000 and you can't do it yourself unless you're an experienced mechanic.

P1556 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 P1556 code is occuring now you should check P1556 repair processes.
Now don't ask yourself; What should you do with P1556 code ?
The solution is here :

P1556 Possible Solution:

P1556 Engine

The crankshaft sensor signals the fuel injection computer or the ignition control when the cylinders are firing. This causes the ignition coil to provide a spark and the injector to inject fuel into each cylinder at the right time.If either sensor isn't working correctly, the car will run rough and the engine will be less efficient. In later car models, the car's computer can usually keep the vehicle running, but the engine warning light on the dashboard goes on to warn the driver.

P1556 Code Meaning :

P 1 5 5 6
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine Fuel And Air Metering Fuel Composition Sensor Circuit Malfunction Cylinder 1 Injector Circuit Low Ignition Coil A Primary/Secondary Circuit Malfunction

The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate.

P1556 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P1556 OBD-II Trouble Code Reactor Temperature Sensor Circuit High is one of the definitions for the P1556; however your vehicles manufacturer may have a different definition for the P1556 code. Please check below for your spec P1556 code.

Main reason For P1556 Code

The reason of P1556 OBD-II Engine Trouble Code is Fuel Composition Sensor Circuit Malfunction.

P1556 the main thing to check is to verify the operation of the VCT solenoid. You're looking for a sticking or stuck VCt solenoid valve caused by contamination. Refer to vehicle specific repair manual to perform component tests for the VCT unit.