Difference between revisions of "16785/P0401/001025"

From Ross-Tech Wiki
Line 24: Line 24:
 
==== Special Notes ====
 
==== Special Notes ====
  
* Some TDI-CR engines have a filter for the EGR that can become restricted and cause a "Insufficient Flow" code.
+
When this fault is stored in a 2009-2012 NAR market [[2.0L CR TDI]] (CBEA, CJAA, CKRA) VW Jetta/Golf (1K/AJ) or the NMS Passat (A3) chassis:
* When this fault is stored in a 2009-2012 NAR market [[2.0L CR TDI]] (CBEA, CJAA, CKRA) VW Jetta/Golf (1K/AJ) or the NMS Passat (A3) chassis please see: TSB 26-12-08 | TPI# 2031583.  When the Exhaust Pressure Flap Control Module (J883) is faulty, the engine controller may have any of the following DTCs:
+
*Please see: TSB 26-13-03 | TPI# 2031583/3 (''formerly know as 26-12-08 | TPI# 2031583'').  When the Exhaust Pressure Flap Control Module (J883) is faulty, the engine controller may have any of the following DTCs:
 
**[[P047F/00115 | P047F/001151 - Exhaust Pressure Control Valve: Stuck Open]]
 
**[[P047F/00115 | P047F/001151 - Exhaust Pressure Control Valve: Stuck Open]]
 
**P0477 - Exhaust Pressure Control Valve "A" Low
 
**P0477 - Exhaust Pressure Control Valve "A" Low
Line 32: Line 32:
 
**P048C - Exhaust Pressure Control Valve "A" Position Sensor/Switch Circuit Range/Performance
 
**P048C - Exhaust Pressure Control Valve "A" Position Sensor/Switch Circuit Range/Performance
 
**[[16785/P0401/001025 | 16785/P0401/001025 - Exhaust Gas Recirculation (EGR) System: Insufficient Flow Detected]]
 
**[[16785/P0401/001025 | 16785/P0401/001025 - Exhaust Gas Recirculation (EGR) System: Insufficient Flow Detected]]
 
+
* Some TDI-CR engines have a filter for the EGR that can become restricted and cause a "Insufficient Flow" code.
  
 
[[Category:Fault Codes]]
 
[[Category:Fault Codes]]

Revision as of 17:31, 1 July 2014

16785/P0401/001025 - Exhaust Gas Recirculation (EGR) System: Insufficient Flow Detected

Possible Symptoms

  • Malfunction Indicator Light (MIL) ON
  • Reduced Exhaust Gas Recirculation (EGR)
  • Reduced Power Output/Engine running rough
  • Increased Emissions

Possible Causes

  • Exhaust Gas Recirculation (EGR) Flow restricted/clogged
  • Exhaust Gas Recirculation (EGR) Valve stuck closed/leaking/faulty
  • Wiring and/or Connector(s) from/to Exhaust Gas Recirculation (EGR) Valve faulty
  • Exhaust Gas Recirculation (EGR) System faulty

Possible Solutions

  • Check/Clean Exhaust Gas Recirculation (EGR) System
  • Check/Replace Exhaust Gas Recirculation (EGR) Valve
  • Check Wiring and/or Connector(s) from/to Exhaust Gas Recirculation (EGR) Valve

Special Notes

When this fault is stored in a 2009-2012 NAR market 2.0L CR TDI (CBEA, CJAA, CKRA) VW Jetta/Golf (1K/AJ) or the NMS Passat (A3) chassis: