P0103 OBD-II Trouble Code

Technical Description

Mass Air Flow (MAF) Circuit High Input

What does that mean?

Basically this means that there is a problem with the Mass Air Flow High (MAF) sensor or circuit. A more technical description would be that the MAF circuit had higher than expected voltage (air flow).

Symptoms

You will likely not notice any serious drivability problems, although there may be symptoms such as a general decrease in power or sluggishness.

Causes

A code P0103 may mean that one or more of the following has happened:

• The MAF may be disconnected, or a wiring connection may be bad
• The MAF sensor may be damaged
• The vehicle computer may be faulty (very rare)

Possible Solutions

The simplest thing to do is to reset the code and see if it comes back. Then start with the cheapest, easiest repair procedures:

• Verify that the Mass Air Flow Sensor wiring is connected properly and that there are no broken / frayed wires.
• Inspect for any air leaks near the MAF sensor.
• Take the MAF out and clean it using a spray cleaner such as brake cleaner or electrical contact cleaner. Be gentle with the sensor.
• Check the voltage of the MAF sensor (refer to a repair manual for vehicle specific information)
• Replace the MAF sensor.

Need more help?

If you still need help regarding this trouble code, please post your concern in the forums.

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