Engine-Codes -
Generic -
P1100
P1100 - Mass Air Flow Sensor Intermittent
P1100 Possible Causes
- Faulty Mass Air Flow Sensor
- Air leak before or after sensor
- Mass Air Flow Sensor harness is open or shorted
- Mass Air Flow Sensor circuit poor electrical connection
How do I fix code P1100
Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.Tech Notes
Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with mass air flow sensor cleaner. Reset code and drive vehicle. If the code comes back, it may be necessary to replaced the mass air flow sensor.Cost of diagnosing the P1100 code
Labor: 1.0
The cost of diagnosing the P1100 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.When is the code detected?
The Engine Control Module (ECM) detected a Mass Air Flow (MAF) sensor signal above or below calibrated limitPossible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1100 Meaning
The Mass Air Flow (MAF) Sensor circuit is monitored by the Powertrain Control Module (PCM) for sudden voltage (or air flow) input change through the Comprehensive Component Monitor (CCM). If during the last 40 warm-up cycles in key ON engine running the PCM detects a voltage (or air flow) change beyond the minimum or maximum calibrated limit, a continuous memory Diagnostic Trouble Code (DTC) P1100 is stored.P1100 More Information
Need more information on how to fix the P1100 code?Get Access to Factory Service Manuals
Information for specific makes
- P1100 AUDI HO2S12 Sensor Circuit Voltage Too Low Air Leak
- P1100 FORD Mass Air Flow Sensor Intermittent
- P1100 HYUNDAI Manifold Absolute Pressure Sensor Malfunction Open/Short
- P1100 LEXUS BARO Sensor Circuit Malfunction
- P1100 LINCOLN Mass Air Flow Sensor Intermittent
- P1100 MAZDA Mass Air Flow Sensor Intermittent
- P1100 MERCURY Mass Air Flow Sensor Intermittent
- P1100 MITSUBISHI Induction Control Valve Position Sensor
- P1100 SCION BARO Sensor Circuit Malfunction
- P1100 SUBARU Starter Switch Circuit Malfunction
- P1100 TOYOTA BARO Sensor Circuit Malfunction
- P1100 VOLKSWAGEN HO2S12 Sensor Circuit Voltage Too Low Air Leak