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P0238

P0238 on Alfa Romeo — Loss of performance with black smoke from the exhaust

All the fault codes

Code P0238 reports a high reading from boost pressure sensor 1. On the Alfa Romeo Giulietta 1.6 JTDM it shows up as a loss of performance and black smoke from the exhaust.

System
Fuel injection
Component
Intercooler-to-intake-manifold hose
Fault
Loss of performance with the engine warning light coming on intermittently and black smoke from the exhaust.
Typical symptoms
  • Loss of performance
  • Black smoke from the exhaust
  • Engine warning light on intermittently
Vehicles affected
  • Alfa Romeo Giulietta 1.6 JTDM 16v
Main code
  • P0238 Boost pressure sensor 1, high reading
Related codes
  • P023861 Boost pressure sensor 1, high reading, signal calculation error

On this fault the diagnostic tool often returns several codes together.

Solution

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The cause and the repair are on Sema Repair

On Sema Repair every code is linked to verified fault cases. The case study gathers, where available, the information you need to reach the repair:

  • Verified cause of the fault
  • Step-by-step repair procedure
  • Indicative repair times
  • Manufacturer's notes
  • Photo of the component with the repair point marked
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