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Discussion Starter #1
Replaced glow plugs, replaced brakes, then fuel filter. Low power in 1st and 2nd gear. Took to Autozone, codes P1550, P 1144 and P0380 came up. Reset and now power seems to be back. Don't know what P1550 means. Help!!! Thanks!

Premium Member
4,753 Posts
To answer your question -


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17958/P1550/005456 - Boost Pressure Control Valve (N75): Control Deviation

Possible Symptoms

  • Irregular behavior
  • Reduced power output
  • Limp mode
Possible Causes

  • Hoses/Pipes incorrect connected, disconnected, blocked or leaking
  • Charger Pressure Control defective
    • Solenoid Valve for Boost Pressure Control (N75) defective
  • Turbocharger defective
Possible Solutions

  • Check Hoses/Pipes to/between Components
  • Check Charge Pressure Control
    • Check Solenoid Valve for Boost Pressure Control (N75)
  • Check turbocharger
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Category: Fault Codes

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