16785/P0401/001025 - Revision history

Peter: /* Special Notes */

2015-10-06T16:36:00Z

Special Notes

← Older revision		Revision as of 16:36, 6 October 2015
Line 36:		Line 36:

	When this fault is stored in a 2009-2014 NAR market [[2.0L CR TDI]] (CBEA or CJAA ) VW Jetta/Golf (1K/AJ)		When this fault is stored in a 2009-2014 NAR market [[2.0L CR TDI]] (CBEA or CJAA ) VW Jetta/Golf (1K/AJ)
	*Please See TSB 01 14 11 \| TPI# 2034898		*Please See TSB 01 14 11(''Updated: 01 14 21'') \| TPI# 2034898
	** May also have fault code stored in ECM		** May also have fault code stored in ECM
	***[[18895/P2463/009315 \| 18895/P2463/009315 - Diesel Particle Filter: Excessive Soot Accumulation]]		***[[18895/P2463/009315 \| 18895/P2463/009315 - Diesel Particle Filter: Excessive Soot Accumulation]]

Peter at 21:51, 11 July 2014

2014-07-11T21:51:29Z

← Older revision		Revision as of 21:51, 11 July 2014
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	** May also have fault code stored in ECM		** May also have fault code stored in ECM
	***[[18895/P2463/009315 \| 18895/P2463/009315 - Diesel Particle Filter: Excessive Soot Accumulation]]		***[[18895/P2463/009315 \| 18895/P2463/009315 - Diesel Particle Filter: Excessive Soot Accumulation]]
	** This code may ~~appear~~ after a regeneration ~~was completed especially when~~ the soot loads before the regeneration ~~were high~~.		* Restrictions in the EGR Filter may occur after a regeneration, if the soot loads where high before the regeneration.

	[[Category:Fault Codes]]		[[Category:Fault Codes]]

Peter: /* Special Notes */

2014-07-11T21:15:35Z

Special Notes

← Older revision		Revision as of 21:15, 11 July 2014
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	* Some TDI-CR engines have a filter for the EGR that can become restricted and cause a "Insufficient Flow" code.		* 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 2009-2014 NAR market [[2.0L CR TDI]] (CBEA or CJAA ) VW Jetta/Golf (1K/AJ)
			*Please See TSB 01 14 11 \| TPI# 2034898
			** May also have fault code stored in ECM
			***[[18895/P2463/009315 \| 18895/P2463/009315 - Diesel Particle Filter: Excessive Soot Accumulation]]
			** This code may appear after a regeneration was completed especially when the soot loads before the regeneration were high.
	[[Category:Fault Codes]]		[[Category:Fault Codes]]

Dana at 21:31, 1 July 2014

2014-07-01T21:31:41Z

← Older revision		Revision as of 21:31, 1 July 2014
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	==== 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
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	**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]]

Dana at 21:05, 1 July 2014

2014-07-01T21:05:27Z

← Older revision		Revision as of 21:05, 1 July 2014
Line 25:		Line 25:

	* Some TDI-CR engines have a filter for the EGR that can become restricted and cause a "Insufficient Flow" code.		* 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 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:
			**[[P047F/00115 \| P047F/001151 - Exhaust Pressure Control Valve: Stuck Open]]
			**P0477 - Exhaust Pressure Control Valve "A" Low
			**[[P048A/001162 \| P048A/001162 - Exhaust Pressure Control Valve 1: Stuck Closed]]
			**P048B - Exhaust Pressure Control Valve "A" Position Sensor/Switch Circuit
			**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]]


	[[Category:Fault Codes]]		[[Category:Fault Codes]]

Jef: /* Possible Solutions */

2013-08-30T16:49:04Z

Possible Solutions

← Older revision		Revision as of 16:49, 30 August 2013
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	* Check/Replace Exhaust Gas Recirculation (EGR) Valve		* Check/Replace Exhaust Gas Recirculation (EGR) Valve
	* Check Wiring and/or Connector(s) from/to Exhaust Gas Recirculation (EGR) Valve		* Check Wiring and/or Connector(s) from/to Exhaust Gas Recirculation (EGR) Valve

			==== Special Notes ====

			* 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]]

RtWiKiSyS0p: 16785/P0401 moved to 16785/P0401/001025

2009-04-06T13:20:48Z

16785/P0401 moved to 16785/P0401/001025

← Older revision	Revision as of 13:20, 6 April 2009
(No difference)

RtWiKiSyS0p at 13:20, 6 April 2009

2009-04-06T13:20:33Z

← Older revision		Revision as of 13:20, 6 April 2009
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	__FORCETOC__		__FORCETOC__
	== 16785/P0401 - Exhaust Gas Recirculation Flow ~~Insufficient~~ Detected ==		== 16785/P0401/001025 - Exhaust Gas Recirculation (EGR) System: Insufficient Flow Detected ==

	==== Possible Symptoms ====		==== Possible Symptoms ====

	* ~~Drivebility problems~~ (~~check dtc's with Knock Sensor~~)		* Malfunction Indicator Light (MIL) ON
	* ~~Irregular behaviour~~		* Reduced Exhaust Gas Recirculation (EGR)
			* Reduced Power Output/Engine running rough
			* Increased Emissions

	==== Possible Causes ====		==== Possible Causes ====

	* EGR ~~valve stuck closed~~		* Exhaust Gas Recirculation (EGR) Flow restricted/clogged
	* EGR valve leaks vacuum		* Exhaust Gas Recirculation (EGR) Valve stuck closed/leaking/faulty
	* EGR flow restricted		* Wiring and/or Connector(s) from/to Exhaust Gas Recirculation (EGR) Valve faulty
	* ~~Circuit~~ EGR ~~short to B+~~		* Exhaust Gas Recirculation (EGR) System faulty
	* ~~EGR damaged~~
	* Circuit DPF EGR sensor (~~differential pressure~~) ~~disconnected, short~~ to ~~B+ or Ground~~
	* DPF EGR ~~sensor downstream hose off or plugded~~
	* ~~DPF~~ EGR ~~sensor damaged, wrong attached~~
	* Control Module damaged

	==== Possible Solutions ====		==== Possible Solutions ====

	* Check ~~all wiring and connections to and from EGR and DPF-EGR~~		* Check/Clean Exhaust Gas Recirculation (EGR) System
	* Check the EGR: use a vacuumpump and pull open the EGR: rpm should change		* Check/Replace Exhaust Gas Recirculation (EGR) Valve
	* Clean ~~the~~ EGR		* Check Wiring and/or Connector(s) from/to Exhaust Gas Recirculation (EGR) Valve
	* Check / Replace EGR
	* Check / ~~Replace DPF-EGR~~

	~~==== Special Notes ====~~

	* The EGR system is monitored when driving at steady state and the EGR is commanded on. When the DPF-EGR sensor indicates that EGR flow is less then a desired minimum a dtc is set.
	* N.B. mechanics with less knowledge do exchange the EGR often, but 75% sure the problem will be back (~~probably the DPF-~~EGR ~~sensor causes the problem~~).

	[[Category:Fault Codes]]		[[Category:Fault Codes]]

Gerrit Speek at 17:25, 11 June 2006

2006-06-11T17:25:15Z

New page

__FORCETOC__
== 16785/P0401 - Exhaust Gas Recirculation Flow Insufficient Detected ==

==== Possible Symptoms ====

* Drivebility problems (check dtc's with Knock Sensor)
* Irregular behaviour

==== Possible Causes ====

* EGR valve stuck closed
* EGR valve leaks vacuum
* EGR flow restricted
* Circuit EGR short to B+
* EGR damaged
* Circuit DPF EGR sensor (differential pressure) disconnected, short to B+ or Ground
* DPF EGR sensor downstream hose off or plugded
* DPF EGR sensor damaged, wrong attached
* Control Module damaged

==== Possible Solutions ====

* Check all wiring and connections to and from EGR and DPF-EGR
* Check the EGR: use a vacuumpump and pull open the EGR: rpm should change
* Clean the EGR
* Check / Replace EGR
* Check / Replace DPF-EGR

==== Special Notes ====

* The EGR system is monitored when driving at steady state and the EGR is commanded on. When the DPF-EGR sensor indicates that EGR flow is less then a desired minimum a dtc is set.
* N.B. mechanics with less knowledge do exchange the EGR often, but 75% sure the problem will be back (probably the DPF-EGR sensor causes the problem).

[[Category:Fault Codes]]