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P0102

Hello. Thank you for writing in. There are a few issues that may be at play, and you may be fighting more that one problem at once. The heater not working correctly is because there is an issue with the...

Hi there. First, check the harness connection on the sensor for any burned or corroded pins. That will cause a restriction and make the power drop. If the harness is good on the plug end, then disconnect the harness from...

The P0171 (https://www.yourmechanic.com/article/p0171-obd-ii-trouble-code-system-too-lean-bank-1-by-andrew-quinn) refers to a possible lack of fuel pressure, a leak in the intake air system, or a possible vacuum leak. The P0102 (https://www.yourmechanic.com/article/p0102-obd-ii-trouble-code-mass-airflow-maf-circuit-low-voltage-input-by-john-nelson) also leans towards a leak in the intake air system. It is possible that...

The P0102 code (https://www.yourmechanic.com/article/p0102-obd-ii-trouble-code-mass-airflow-maf-circuit-low-voltage-input-by-john-nelson) indicates a fault with the mass airflow sensor system. The mass air flow or MAF is a sensor that is used to monitor the air coming into the engine. Many of these include an intake air...

Both of these sensors have to do with sending air mass and pressure information to the engine computer. It is likely you have a vacuum leak or these sensors are starting to fail and are offering the engine computer false...

Hi and thanks for contacting YourMechanic. Since you are getting different sensors acting up, check all of the connections to all of the sensors and make sure that there is no missing bolts. There could be a vacuum leak (https://www.yourmechanic.com/article/is-it-safe-to-drive-with-a-vacuum-leak)...

A bad mass airflow (MAF) sensor (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-mass-airflow-sensor) can cause loss of power, no starts, and lean or rich conditions. If cleaning the sensor did not get rid of the P0102 trouble code (https://www.yourmechanic.com/article/p0102-obd-ii-trouble-code-mass-airflow-maf-circuit-low-voltage-input-by-john-nelson), then replace the MAF sensor (https://www.yourmechanic.com/services/mass-airflow-sensor-replacement) and...

The problem may be with the mass air flow sensor (MAF sensor) connector. Start the engine and wiggle the connector. If the engine RPM starts to change or the engine performance changes, you'll know the connector is to blame. If...