CAR OBD CODES

P1155 OBD Code Definition:
P1155 Alternative Fuel Controller
P1155 OBD Code Description:

• Limp mode
• Engine Light ON (or Service Engine Soon Warning Light)

• Connection(s) to/from Manifold Abs.Pressure Sensor faulty
• Manifold Abs.Pressure Sensor (G71) faulty
• Pipes/hoses not/wrongly attached

• Check wiring and connections
• Check / Replace Manifold Abs.Pressure Sensor
• Check pipes and hoses

• Someone with this dtc replaced the Boost Pressure Controle Valve and the dtc disappeared
• More info about the Manifold Abs.Pressure Sensor