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P1551 Engine Trouble Code

Meaning of P1551 engine trouble code is a kind of powertrain trouble code and P1551 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.

P1551 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 P1551 code is occuring now you should check P1551 repair processes.
Now don't ask yourself; What should you do with P1551 code ?
The solution is here :

P1551 Possible Solution:

P1551 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.

P1551 Code Meaning :

P 1 5 5 1
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine Fuel And Air Metering Fuel Composition Sensor Circuit Malfunction Cylinder 1 Injector Circuit Low Crankshaft Position Sensor A Circuit Low Input

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.

P1551 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P1551 OBD-II Trouble Code Idle Speed Actuator Short is one of the definitions for the P1551; however your vehicles manufacturer may have a different definition for the P1551 code. Please check below for your specific make. P1551 code.

Main reason For P1551 Code

The reason of P1551 OBD-II Engine Trouble Code is Fuel Composition Sensor Circuit Malfunction.

P1551 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.