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P1271 Engine Trouble Code

P1271 Engine

When you check engine light came on code P1271 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 P1271 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.

P1271 Code Meaning :

P 1 2 7 1
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine Fuel And Air Metering Ambient Air Temperature Sensor Circuit Low Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector) Glow Plug/Heater Circuit 'A' Malfunction

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.

P1271 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P1271 OBD-II Trouble Code Cylinder #1 High To Low Side Open is one of the definitions for the P1271; however your vehicles manufacturer may have a different definition for the P1271 code. Please check below for your specific m P1271 code.

Reason For P1271 Code

The reason of P1271 OBD-II Engine Trouble Code is Ambient Air Temperature Sensor Circuit Low.

P1271 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.