P0101 on Pontiac
Mass or Volume Air Flow Sensor Circuit Range/Performance
P0101 on Pontiac vehicles indicates mass or volume air flow sensor circuit range/performance. Au7o has documented this code across 1 Pontiac model — most commonly on Bonneville. This powertrain code means the mass air flow (MAF) sensor's reading is out of the expected range or not changing as it should compared to other engine data. The MAF sensor measures how much air enters the engine so the computer can calculate the correct fuel amount. When the reported airflow doesn't match expectations, the air-fuel mixture can be off, causing rough running, hesitation, stalling, or poor fuel economy. It is usually not an emergency but should be fixed for proper performance and emissions. Typical repair costs on Pontiac range from $100 to $350, depending on the specific model and root cause.
Common Causes of P0101
- •Dirty or contaminated MAF sensor element
- •Vacuum/intake air leak (unmetered air after the sensor)
- •Loose, cracked, or torn intake air ducting
- •Dirty or clogged air filter
- •Faulty MAF sensor
- •Wiring or connector problems at the MAF sensor
P0101 on Pontiac by Model
Pontiac Bonneville(1 issue)
- Mass Air Flow (MAF) Sensor Contamination and Failure1996-2005
The MAF sensor on OBD-II 3800-powered Bonnevilles is a frequent failure point: its hot-wire element becomes contaminated with dirt or oil (often from over-oiled aftermarket filters) or the sensor electronics fail outright, sending a low or erratic frequency signal to the PCM and setting codes P0101/P0102. The result is hesitation, stumbling, rough idle, lack of power, and stalling. A classic 3800 diagnostic trick — the engine running noticeably better with the MAF unplugged — confirms the sensor as the culprit.
Looking for P0101 on a different make?
View P0101 across all makes →Frequently Asked Questions
What does P0101 mean on Pontiac?▼
P0101 stands for "Mass or Volume Air Flow Sensor Circuit Range/Performance." This powertrain code means the mass air flow (MAF) sensor's reading is out of the expected range or not changing as it should compared to other engine data. The MAF sensor measures how much air enters the engine so the computer can calculate the correct fuel amount. When the reported airflow doesn't match expectations, the air-fuel mixture can be off, causing rough running, hesitation, stalling, or poor fuel economy. It is usually not an emergency but should be fixed for proper performance and emissions. On Pontiac specifically, this code is documented across 1 model.
What causes P0101 on Pontiac vehicles?▼
Common causes on Pontiac: Dirty or contaminated MAF sensor element, Vacuum/intake air leak (unmetered air after the sensor), Loose, cracked, or torn intake air ducting, Dirty or clogged air filter, Faulty MAF sensor. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0101 on a Pontiac?▼
Repair costs on Pontiac range from $100 to $350, depending on the specific model and root cause.
Which Pontiac models have P0101 documented?▼
Au7o has documented P0101 on 1 Pontiac model: Bonneville.