Sometimes foreign objects like leaves, oil, or dust can clog up the air flow sensor measuring element (hot wire ).ģ. T hey’ll inspect your mass airflow sensor to see if it’s damaged or dirty. This is because a faulty MAF sensor could also trigger other codes.Ģ. First, your mechanic will use a scan tool to check if you have another active trouble code like misfire codes r O2 sensor codes. Here’s how a professional mechanic will diagnose error code P0102 to determine the root cause of the problem:ġ. You may have an active P0102 code for many reasons, like a frayed wiring harness, disconnected oxygen sensor signal wire, or a damaged MAF sensor signal circuit. Engine computer problems are rare, but if damaged, it could compute erroneous intake air readings and cause an active P0102 code. ◾ Finally, there may be issues with you r E CM (like a damaged ECM connector or loose wiring ). ◾ Y ou could have a clogged catalytic converter which causes a lack of power at higher revolutions per minute (RPM). ◾ A low minimum air rate through the MAF sensor bore can trigger this trouble code during deceleration or at engine idle. ◾ An air leak in your air filter could result in insufficient oxygen entering your engine. ![]() ![]() ◾ T here may be damage to your MAF sensor wiring harness connector or MAF sensor connector, resulting in false readings. ◾ Your mass airflow sensor may have low voltage, which can lead to a malfunctioning ECM. ◾ Your MAF sensor can also be dirty or partially clogged by dust, leaves, or carbon build-up. ◾ The most obvious issue is restricted airflow from your air cleaner to the mass airflow sensor caused by a clogged air filter. These are the most common causes of error code P0102 :
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