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B1109 Engine Trouble Code

Meaning of B1109 engine trouble code is : When the check engine light comes B1109 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.

B1109 Possible Solution:

B1109 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.

B1109 Code Meaning :

B 1 1 0 9
OBD-II Diagnostic Body (B) Trouble Code For Engine Fuel And Air Metering Fuel Rail/System Pressure - Too High Cold Start Injector 1 Malfunction Reverse Input Circuit

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.

B1109 OBD-II Diagnostic Body (B) Trouble Code Description

B1109 engine trouble code is about Reverse Input Circuit.

Reason For B1109 Code

The reason of B1109 OBD-II Engine Trouble Code is Fuel Rail/System Pressure - Too High.

B1109 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.