Bmw M4 P1157 Engine Error Code

When you check Bmw M4 car engine light came on code P1157 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However Bmw manufacturer may have a different definition for the P1157 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

Another consequence of P1157 Bmw M4 engine overheating may be a blown head gasket. Heat makes aluminum swell almost three times faster than cast iron. Thermal stress can distort the head and make it swell in areas that are hottest like those between exhaust valves in adjoining cylinders, and areas that have restricted coolant flow like the narrow area that separates the cylinders. The typical aluminum head swells most in the middle, which can crush the head gasket if the head gets too hot. This will usually cause the head gasket to leak compression between adjacent cylinders, or leak coolant into the cylinders.

Bmw M4 P1157 OBD-II Diagnostic Powertrain (P) Trouble Code Description Bmw M4 car P1157 OBD-II Trouble Code Lack Of HO2S22 Switch - Sensor Indicates Lean is one of the definitions for the P1157; however your vehicles manufacturer may have a different definition for the P1157 code. Please check below for you Reason For Bmw M4 P1157 Code The reason of Bmw M4 P1157 OBD-II Engine Error Code is P1157 Lack Of HO2S22 Switch - Sensor Indicates Lean.

While fuel economy was increased, acceleration was seriously compromised, and the loss of engine vacuum led to a dangerous loss of braking assist when the P1157 Bmw M4 code system was in four-cylinder mode. In addition to these issues, while the company proposed a hydraulically controlled system that could be switched from within the car, the version they implemented had to be manually changed in the engine compartment using hand tools.

Bmw M4 P1157 Possible Solution :

In-line Ford engines, along with those of most other manufacturers, begin the numbering of cylinders at the front and proceed in numerical order toward the back. In the V-engine design, Ford follows a similar design with the number one cylinder at the front left of the engine. In the V-6 configuration, cylinder 4 is at the front right of the engine and in a V-8, cylinder number 5 is in that location. Other manufacturers sometimes use an alternating pattern in the V-engines.

What does fault code P1157 mean for Bmw M4 ? What does a diagnostic reading P1157 mean for Bmw M4 ? How to fix OBD2 Code P1157 for Bmw M4 ? What do we know about P1157 code for Bmw M4 ?