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Home/DTC Codes/Fiat/Cronos/2018-2025 1.0L I4 Flex Firefly/P0602
P0602

Control Module Programming Error

2018-2025 Fiat Cronos 1.0L I4 Flex Firefly

High SeverityPowertrainGeneric (SAE)

Description

The PCM is not properly programmed or calibration is missing.

Symptoms

  • Check Engine Light
  • Various driveability issues
  • Incorrect operation

Common Causes

  • PCM not programmed after replacement
  • Incomplete flash/reprogramming
  • Wrong calibration file

Diagnostic Steps

  1. Verify PCM part number matches application
  2. Reprogram PCM with correct calibration
  3. Check for TSBs

Repair Notes

Reprogram PCM with correct calibration files.

Related Codes

P0601Internal Control Module Memory Check Sum ErrorP0606PCM Processor Fault

Other Powertrain Codes

P0602 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 P0602 mean on a 2018-2025 Fiat Cronos?

P0602 stands for "Control Module Programming Error". The PCM is not properly programmed or calibration is missing.

What are the symptoms of P0602 on a Fiat Cronos?

Common symptoms of P0602 include: Check Engine Light, Various driveability issues, Incorrect operation.

What causes P0602 on a 2018-2025 Fiat Cronos?

Common causes of P0602 include: PCM not programmed after replacement, Incomplete flash/reprogramming, Wrong calibration file.

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