Logo

P254A Engine Trouble Code

Meaning of P254A engine trouble code is : When the check engine light comes P254A code on the first you should check is the gas cap. Pull over, retighten it, and take a look at the cap to see if it has any cracks in it. Continue driving and see if the check engine light turns off. Alternately, you can purchase a gas cap for about $3 at an auto parts store. All you need to do is take the old one off and screw on the new one. If you've already made it to the store, you might as well just replace it. While not car-threatening, it's good to take care of this right away to improve gas mileage.

P254A Possible Solution:

P254A Engine

Power Steering Pressure (PSP) Switch Malfunction In Key On, Engine Off Self-Test, this DTC indicates the PSP input to the PCM is high. In Key On, Engine Running Self-Test, this DTC indicates that the PSP input did not change state. Steering wheel must be turned during Key On, Engine Running Self-Test PSP switch/shorting bar damaged SIG RTN circuit open PSP circuit open or shorted to SIGRTN PCM damaged.

P254A Code Meaning :

P 2 5 4 a
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine Fuel And Air Metering (Injector Circuit Malfunctions Only) Fuel Composition Sensor Circuit Malfunction Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)

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.

P254A OBD-II Diagnostic Powertrain (P) Trouble Code Description

P254A engine trouble code is about .

Reason For P254A Code

The reason of P254A OBD-II Engine Trouble Code is Fuel Composition Sensor Circuit Malfunction.

P254A DTC reports a sensor fault, replacement of the sensor is unlikely to resolve the underlying problem. The fault is most likely to be caused by the systems that the sensor is monitoring, but might even be caused by the wiring to the sensor itself.