Logo

P1256 Engine Trouble Code

P1256 Engine

When you check engine light came on code P1256 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However your vehicle's manufacturer may have a different definition for the P1256 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

Theoretically you can drive for a few weeks or even months with a broken MAF sensor. You will notice a decrease in gas mileage and over time the car will eventually start stalling a lot. At a shop, the replacement cost is between $200-$300 depending on the car, but that's usually the cost of parts because the labor is relatively simple.

P1256 Code Meaning :

P 1 2 5 6
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine Fuel And Air Metering Ambient Air Temperature Sensor Circuit Low Turbocharger Boost Sensor A Circuit Low Reverse Input Circuit

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.

P1256 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P1256 OBD-II Trouble Code Pedal Correlation PDS1 and HPDS is one of the definitions for the P1256; however your vehicles manufacturer may have a different definition for the P1256 code. Please check below for your specific mak P1256 code.

Reason For P1256 Code

The reason of P1256 OBD-II Engine Trouble Code is Ambient Air Temperature Sensor Circuit Low.

P1256 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.