P1257 Engine Code Repair
Meaning of P1257 engine trouble code is a kind of powertrain trouble code and when your car's 'P1257 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.
P1257 Fault Symptoms :
- Check engine light comes on
- Engine stalling or misfiring
- Engine performance issues
- Car not starting
If one of these reasons for P1257 code is occuring now you should check P1257 repair processes.
Now don't ask yourself; What should you do with P1257 code ?
The solution is here :
P1257 Possible Solution:
Air Conditioning Pressure Sensor (ACP) Insufficient Pressure Change Each time the A/C clutch engages, the PCM is looking for a pressure change in the refrigerant. If the change in pressure is outside of the calibration the DTC will set. A/C system mechanical failure Open ACP or VREF circuit A/C sensor damaged A/C system electrical failure A/C clutch always engaged Verify A/C system function, including refrigerant charge.
P1257 Code Meaning :
P
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine
1
Fuel And Air Metering
2
Fuel Rail/System Pressure - Too High
5
Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
7
Ignition Coil A Primary/Secondary Circuit Malfunction
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.
P1257 OBD-II Diagnostic Powertrain (P) Trouble Code DescriptionP1257 OBD-II Trouble Code Pedal Correlation PDS2 and HPDS is one of the definitions for the P1257; however your vehicles manufacturer may have a different definition for the P1257 code. Please check below for your specific mak P1257 code.Main reason For P1257 CodeThe reason of P1257 OBD-II Engine Trouble Code is Fuel Rail/System Pressure - Too High. |
P1257 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.