P1A0A BMW Fault Code

Description:

The issue covered by the bulletin involves a power steering noise/whine or fluid leak from the power steering pump, gear or high pressure side power steering hose during extreme low outdoor temperature operation.

P1A0A Code Symptoms :

The P1A0A Check Engine lamp is perhaps the most troubling of lights because it could mean so many different things, from you didn't screw the gas cap on tightly enough to look out for pistons flying through the hood and into the stratosphere. The easiest way to find out what this light is telling you is to hook your vehicle up to a scan tool. P1A0A diagnostic tool looks a little like an oversized calculator and plugs into a communication port inside the car. After you instruct it to perform the scan, it speaks with your car's computers to find out exactly what's prompting the light to turn on.

Diagnosis And Repairing P1A0A

Parts or components should not be replaced with reference to only a P1A0A DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.

How to fix P1A0A code ?

• Continuous oil flow to the VCT piston chamber
• Faulty Intake Valve Timing Control Solenoid Valve
• Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection
• Incorrect Positive Crankcase Ventilation (PCV) hose connection

A good starting point in your diagnosis is checking all system fuses and fusible links. This can be done using the BMW DVOM on the voltage setting. You will want to test the fuses with circuits loaded.

Some fuses will appear normal until a load is placed on their respective circuit; at which point they will fail. This has been the cause of many 'phantom malfunctions'. Consult your vehicle information source for fuse and fusible link locations. If all fuses are in working order, you may want to check TCM relay operation by swapping identical relays. Usually the horn relay, starter relay, fuel pump relay, air conditioning clutch relay, and controller relays are similar enough in design to swap for diagnostic purposes.