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P1242 Engine Code Repair

Meaning of P1242 engine trouble code is a kind of powertrain trouble code and when your car's 'P1242 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.

P1242 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 P1242 code is occuring now you should check P1242 repair processes.
Now don't ask yourself; What should you do with P1242 code ?
The solution is here :

P1242 Possible Solution:

P1242 Engine

Excessive air inflow can be caused by a vacuum leak, a dirty sensor or, an exhaust gas recirculation valve not closing properly. If the problem is not enough fuel, the culprit may be dirty injectors or fuel filters, a weak fuel pump or a leaky fuel pressure regulator. The lean fuel mix error may be accompanied by rough idling, engine misfires, hesitation during acceleration and overall poor engine performance.

P1242 Code Meaning :

P
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine

1
Fuel And Air Metering

2
Fuel Rail/System Pressure - Too High

4
Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)

2
Crankshaft Position Sensor A Circuit Low Input

The oxygen (02) sensors on your car measure the oxygen in the exhaust to determine how rich or lean the ratio of fuel and air are in the cylinders. Optimizing this mixture means better fuel economy and fewer exhaust emissions.

P1242 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P1242 OBD-II Trouble Code Sensor Power Supply High Input is one of the definitions for the P1242; however your vehicles manufacturer may have a different definition for the P1242 code. Please check below for your specific make P1242 code.

Main reason For P1242 Code

The reason of P1242 OBD-II Engine Trouble Code is Fuel Rail/System Pressure - Too High.

P1242 DTCs may also be triggered by faults earlier down the line. For example, a dirty MAF sensor might be causing the car to overcompensate in its fuel-trim adjustments. As a result, oxygen sensors are likely to report fuel mixture problems.