Difference between revisions of "17705/P1297/004759"

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==== Possible Symptoms ====
 
==== Possible Symptoms ====
  
 +
* Malfunction Indicator Light (MIL) ON
 
* Power Loss
 
* Power Loss
  
 
==== Possible Causes ====
 
==== Possible Causes ====
  
* Leaking hoses and/or pipes between components
+
* Leaking Hoses and/or Pipes between Components
* Check Boost Pressure Control Valve (N249)
+
* Turbocharger Recirculating Valve (N249) (Diverter Valve) faulty
 +
* Throttle Body dirty
 +
* Vacuum leak
 +
* Boost Pressure Control Valve (N75) faulty
  
 
==== Possible Solutions ====
 
==== Possible Solutions ====
  
* Check hoses and/or pipes between components
+
* Check Hoses and Pipes between Components
* Check / Replace Boost Pressure Control Valve (N249)
+
* Check / Replace Turbocharger Recirculating Valve (N249) (Diverter Valve)
* Check / clean Throttle Valve, do Throttle Body Alignment
+
* Check / Clean Throttle Body
 +
** Perform [[Throttle Body Alignment (TBA)]]
 +
* Check for Vacuum leak(s) including PCV system
 +
* Check / Replace Boost Pressure Control Valve (N75)
  
 
==== Special Notes ====
 
==== Special Notes ====
  
* Did anyone fitted an extra (wrong) dump valve?
+
* When found in the NAR 2.0T (BPY) check RVUTB: 01-09-03  or  2018919 for updated Crankcase Breather Valve
 +
**  If the breather valve is faulty, full engine vacuum is typically found when removing the oil cap at idle.
 +
* When found in 1.8T engines, such as the (3B) B5/B5.5 Passat, check the PCV "bleeder valve". ''Example part number 06B-103-245''
 +
**  One way to troubleshoot the problem is to pinch closed the vacuum supply hose that attaches to the bleeder valve to see if the excessive crankcase vacuum is resolve resulting in a smooth idle.
  
 
[[Category:Fault Codes]]
 
[[Category:Fault Codes]]

Latest revision as of 11:19, 16 September 2016

17705/P1297/004759 - Pressure Drop between Turbo and Throttle Valve (check D.V.!)

Possible Symptoms

  • Malfunction Indicator Light (MIL) ON
  • Power Loss

Possible Causes

  • Leaking Hoses and/or Pipes between Components
  • Turbocharger Recirculating Valve (N249) (Diverter Valve) faulty
  • Throttle Body dirty
  • Vacuum leak
  • Boost Pressure Control Valve (N75) faulty

Possible Solutions

  • Check Hoses and Pipes between Components
  • Check / Replace Turbocharger Recirculating Valve (N249) (Diverter Valve)
  • Check / Clean Throttle Body
  • Check for Vacuum leak(s) including PCV system
  • Check / Replace Boost Pressure Control Valve (N75)

Special Notes

  • When found in the NAR 2.0T (BPY) check RVUTB: 01-09-03 or 2018919 for updated Crankcase Breather Valve
    • If the breather valve is faulty, full engine vacuum is typically found when removing the oil cap at idle.
  • When found in 1.8T engines, such as the (3B) B5/B5.5 Passat, check the PCV "bleeder valve". Example part number 06B-103-245
    • One way to troubleshoot the problem is to pinch closed the vacuum supply hose that attaches to the bleeder valve to see if the excessive crankcase vacuum is resolve resulting in a smooth idle.