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Home/DTC Codes/Fiat/Cronos/2018-2025 1.3L I4 Flex Firefly/P0234
P0234

Turbocharger/Supercharger A Overboost Condition

2018-2025 Fiat Cronos 1.3L I4 Flex Firefly

Critical SeverityPowertrainGeneric (SAE)

Description

The boost pressure has exceeded the maximum allowed value.

Symptoms

  • Check Engine Light
  • Excessive power then limp mode
  • Whining turbo noise
  • Possible engine damage

Common Causes

  • Wastegate stuck closed
  • Boost control solenoid failure
  • Boost pressure sensor fault
  • Blocked wastegate actuator hose

Diagnostic Steps

  1. Check wastegate operation
  2. Test boost control solenoid
  3. Monitor boost pressure
  4. Inspect vacuum lines to wastegate

Repair Notes

Address immediately to prevent engine damage. Check wastegate and boost control.

Related Codes

P0045Turbo/Supercharger Boost Control Solenoid Circuit/OpenP0046Turbo/Supercharger Boost Control Solenoid Circuit Range/PerformanceP0049Turbo/Supercharger Turbine OverspeedP0235Turbocharger/Supercharger Boost Sensor A CircuitP0236Turbocharger/Supercharger Boost Sensor A Range/Performance

Other Powertrain Codes

P0234 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 P0234 mean on a 2018-2025 Fiat Cronos?

P0234 stands for "Turbocharger/Supercharger A Overboost Condition". The boost pressure has exceeded the maximum allowed value.

What are the symptoms of P0234 on a Fiat Cronos?

Common symptoms of P0234 include: Check Engine Light, Excessive power then limp mode, Whining turbo noise, Possible engine damage.

What causes P0234 on a 2018-2025 Fiat Cronos?

Common causes of P0234 include: Wastegate stuck closed, Boost control solenoid failure, Boost pressure sensor fault, Blocked wastegate actuator hose.

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