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Home/DTC Codes/Fiat/Cronos/2018-2025 1.0L I4 Flex Firefly/P0103
P0103

Mass Air Flow (MAF) Circuit High Input

2018-2025 Fiat Cronos 1.0L I4 Flex Firefly

Moderate SeverityPowertrainGeneric (SAE)

Description

The MAF sensor signal voltage is higher than the maximum expected value.

Symptoms

  • Check Engine Light
  • Lean fuel condition
  • Poor acceleration
  • Engine surge

Common Causes

  • Faulty MAF sensor
  • Short to voltage in signal wire
  • Water damage to sensor

Diagnostic Steps

  1. Check MAF sensor connector
  2. Test signal voltage
  3. Inspect wiring for shorts to power
  4. Test sensor output

Repair Notes

Replace MAF sensor or repair wiring.

Related Codes

P0100Mass Air Flow (MAF) CircuitP0101Mass Air Flow (MAF) Circuit Range/PerformanceP0102Mass Air Flow (MAF) Circuit Low Input

Other Powertrain Codes

P0103 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 P0103 mean on a 2018-2025 Fiat Cronos?

P0103 stands for "Mass Air Flow (MAF) Circuit High Input". The MAF sensor signal voltage is higher than the maximum expected value.

What are the symptoms of P0103 on a Fiat Cronos?

Common symptoms of P0103 include: Check Engine Light, Lean fuel condition, Poor acceleration, Engine surge.

What causes P0103 on a 2018-2025 Fiat Cronos?

Common causes of P0103 include: Faulty MAF sensor, Short to voltage in signal wire, Water damage to sensor.

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