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Home/DTC Codes/Fiat/Uno/2010-2021 1.0L I4 Flex Fire Evo/P0100
P0100

Mass Air Flow (MAF) Circuit

2010-2021 Fiat Uno 1.0L I4 Flex Fire Evo

Moderate SeverityPowertrainGeneric (SAE)

Description

The PCM detected a general malfunction in the Mass Air Flow sensor circuit.

Symptoms

  • Check Engine Light
  • Poor acceleration
  • Rough idle
  • Engine stalling
  • Black smoke

Common Causes

  • Faulty MAF sensor
  • Dirty MAF sensor element
  • Air leak after MAF
  • Wiring issue
  • Damaged air filter

Diagnostic Steps

  1. Inspect MAF sensor for contamination
  2. Check for air leaks between MAF and throttle body
  3. Test MAF signal with scan tool
  4. Inspect wiring and connector
  5. Try cleaning MAF with approved cleaner

Repair Notes

Clean MAF sensor with electronics cleaner. Replace if cleaning does not resolve.

Related Codes

P0101Mass Air Flow (MAF) Circuit Range/PerformanceP0102Mass Air Flow (MAF) Circuit Low InputP0103Mass Air Flow (MAF) Circuit High InputP0104Mass Air Flow (MAF) Circuit Intermittent

Other Powertrain Codes

P0100 on Other Vehicles

Fiat 124 Spider

2017-2020 1.4L I4 Turbo

Fiat 126p Maluch

1973-2000 0.65L I2 Air-Cooled

Fiat 126p Maluch

1987-2000 0.7L I2 Air-Cooled

Fiat 500

2012-2019 1.4L I4

Fiat 500 Abarth

2012-2019 1.4L I4 Turbo

Fiat 500 BR

2011-2020 1.4L I4 Flex Fire Evo

Fiat 500 PL

2007-2025 1.0L I3 Hybrid FireFly 70

Fiat 500 PL

2007-2025 1.2L I4 Fire 69

Common Questions

What does code P0100 mean on a 2010-2021 Fiat Uno?

P0100 stands for "Mass Air Flow (MAF) Circuit". The PCM detected a general malfunction in the Mass Air Flow sensor circuit.

What are the symptoms of P0100 on a Fiat Uno?

Common symptoms of P0100 include: Check Engine Light, Poor acceleration, Rough idle, Engine stalling, Black smoke.

What causes P0100 on a 2010-2021 Fiat Uno?

Common causes of P0100 include: Faulty MAF sensor, Dirty MAF sensor element, Air leak after MAF, Wiring issue, Damaged air filter.

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