P0101 Diagnostic Trouble Code Discussion for January 2021
Mass Airflow Sensor Performance
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| Help Request | Posted | |
| 2009 Chevrolet Impala LT 3.9L Hesitation, Surge, MIL Lamp on VIN: 2G1WC57M59 ... codes for maf and tps issues p0101 p0121 p1101 and running rich p0172. Air filter housing was not attached so air was bypassing filter. Maf and honeycomb were dirty and appeared to have been wet. Preliminary maf Readings... |
January 20, 2021 | |
| 2009 Chevrolet Impala LT 3.9L Hesitation, Surge, MIL Lamp on VIN: 2G1WC57M59 ... p0121 p1101 and running rich p0172. Air filter housing was not attached so air was bypassing filter. Maf and honeycomb were dirty and appeared to have been wet. Preliminary maf Readings... |
January 21, 2021 | |
| 2012 Chevrolet Malibu LS 2.4L Hesitation VIN: 1G1ZB5E03C P0101: Mass Air Flow MAF Sensor Performance. New customer vehicle towed in, needs motor after valve crash. install used motor, vehicle has terrible hesitation now, and can be duplicated in the bay with a brake torque. when it hesitates, vacuum drops to zero, Injector pulse width drops from 14ms to 1.... |
January 23, 2021 |
