Error code P0102 is a diagnostic trouble code (DTC) defined as “Mass Air Flow (MAF) Circuit Low Input.”
Code P0102 is set when your vehicle’s Engine Control Module (ECM) or Powertrain Control Module (PCM) detects a problem with the performance of your Mass Air Flow sensor (MAF sensor).
Your MAF sensor is mounted between the air filter and throttle body and measures the amount of air entering the engine. Your PCM and ECM use the MAF sensor signal to determine fuel control.
When your engine computer detects a signal below the recommended specification for a certain period of time, it triggers engine code P0102.
While DTC P0102 is a generic OBD-II engine light code for MAF sensor problems, not every vehicle has this code stored in its code library. Sometimes, the code is different from one manufacturer to the next, so you may get a different code on your vehicle that means the same thing as P0102.
Continued driving for a short period is okay with an active P0102 trouble code and mass airflow sensor issues.
Head to a mechanic within the next month to fix this error code and prevent any more damage to other parts of your vehicle, like your catalytic converter.
These are the most common causes of error code P0102:
Here’s how a professional mechanic will diagnose error code P0102 to determine the root cause of the problem:
Note: It’s essential to finish the entire diagnostic process before fixing any parts. You don’t want to pay for a new MAF sensor when the culprit is a dirty air filter.
Here’s how your mechanic will begin fixing the problem, depending on the cause:
The cost of repairing trouble code P0102 depends on the underlying issue. Here’s an estimated range of how much you can expect to pay for different repair jobs:
Note: The repair costs mentioned above include labor charges.
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