Limp Mode - TDI - 17965 P1557

AUDI 130BHP TDI SPORT

DOLPHIN GREY
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Oct 23, 2007
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Hi -

My car has developed a fault of the dreaded limp mode, had it put on diagnostics and it reads 17965 - P1557 - Charge pressure control Regulating limit surpassed.

I've had the MAF replaced, and the top Turbo Intercooler pipe replaced, but still get this fault.

Limp mode only really happens when i exceed 3500 rpm, sooner if driving on a hill.

Don't think it's the turbo, as I have been driving with this fault since early this year, and the fault has not gone any worser/better.

Any ideas?
 
17965/P1557/005463 - Charge Pressure Control: Positive Deviation

Possible Symptoms

  • Reduced power output
  • Limp mode
Possible Causes

  • Boost Pressure too High
  • Hoses/Pipes incorrect connected, disconnected, blocked or leaking
  • Charger Pressure Control defective
    • VNT (variable nozzle turbo): nozzles stuck
  • Solenoid Valve for Boost Pressure Control (N75) defective
Possible Solutions

  • Check Hoses/Pipes to/between Components
  • Check Solenoid Valve for Boost Pressure Control (N75)
  • Check / Clean / Replace Charge Pressure Control
    • Check / Clean mechanism for variable nozzles
Retrieved from "http://wiki.ross-tech.com/index.php/17965/P1557/005463"

hope it helps

Mike
 
have you looked on the ross tech web site....? gives you the symptoms and possible causes/solutions.....I did have a quick look, you'll have to search the code to bring it up if you haven't already......