P0491 - Revision history

Dana at 14:52, 16 March 2022

2022-03-16T14:52:32Z

← Older revision		Revision as of 14:52, 16 March 2022
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	*** 2011+ Q7 CJWE, CJWC, CJWB 3.0L		*** 2011+ Q7 CJWE, CJWC, CJWB 3.0L

	* When found in ~~most~~ '''NAR''' (North American Market) 2013 to 2015 VW Jetta, Beetle and NMS Passat with 1.8T Engine codes CPPA, CPLA, CPKA and CPRA ~~[[P0491]] and [[P2440]]~~, check to see if TPI '''2040822''' / TSB '''01-15-14''' is applicable.		* When [[P0491]] or [[P2440]] are found in '''NAR''' (North American Market) 2013 to 2015 VW Jetta, Beetle and NMS Passat with 1.8T Engine codes CPPA, CPLA, CPKA and CPRA, check to see if TPI '''2040822''' / TSB '''01-15-14''' is applicable.
	** https://static.nhtsa.gov/odi/tsbs/2015/MC-10122989-9999.pdf NHTSA		** https://static.nhtsa.gov/odi/tsbs/2015/MC-10122989-9999.pdf NHTSA

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

Dana at 14:51, 16 March 2022

2022-03-16T14:51:11Z

← Older revision		Revision as of 14:51, 16 March 2022
Line 38:		Line 38:
	*** 2011+ Q7 CJWE, CJWC, CJWB 3.0L		*** 2011+ Q7 CJWE, CJWC, CJWB 3.0L

			* When found in most '''NAR''' (North American Market) 2013 to 2015 VW Jetta, Beetle and NMS Passat with 1.8T Engine codes CPPA, CPLA, CPKA and CPRA [[P0491]] and [[P2440]], check to see if TPI '''2040822''' / TSB '''01-15-14''' is applicable.
			** https://static.nhtsa.gov/odi/tsbs/2015/MC-10122989-9999.pdf NHTSA

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

Jef: /* Special Notes */

2021-03-03T14:39:04Z

Special Notes

← Older revision		Revision as of 14:39, 3 March 2021
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	==== Special Notes ====		==== Special Notes ====

	* When found in ~~the following~~ '''NAR''' (North American Market) Audi models ~~listed below check to see if TPI 2033001 is applicable:~~		* When found in most '''NAR''' (North American Market) 2009 to 2016 Audi models with 3.0L or 3.2L engines with [[P0491]] and [[P0492]] stored at same time, check to see if TPI '''2033001''' is applicable.
			** https://static.nhtsa.gov/odi/tsbs/2018/MC-10153120-9999.pdf NHTSA
	*'''Audi''' TPI 2033001 pertains to [[P0491]] and [[P0492]] stored at same time ~~on the following vehicles with more than 15~~,~~000 miles~~:		*** 2010+ S4 and S5 with CCBA 3.0L
	** 2010+ S4 and S5 with CCBA 3.0L		*** 2008+ A5, 2009+ A4, 2011 A6 with CALA 3.2L
	** 2008+ A5, 2009+ A4, 2011 A6 with CALA 3.2L		*** 2009-2011 A6 CCAA 3.0L
	** 2009-2011 A6 CCAA 3.0L		*** 2012 A6/A7 CGXB 3.0L
	** 2012 A6/A7 CGXB 3.0L		*** 2013+A6/A7 CTUA 3.0L
	** 2013+A6/A7 CTUA 3.0L		*** 2009+ Q5 CALB 3.2L
	** 2009+ Q5 CALB 3.2L		*** 2011+ Q7 CJWE, CJWC, CJWB 3.0L
	** 2011+ Q7 CJWE, CJWC, CJWB 3.0L


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

Dana at 20:11, 30 November 2016

2016-11-30T20:11:20Z

← Older revision		Revision as of 20:11, 30 November 2016
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	** 2010+ S4 and S5 with CCBA 3.0L		** 2010+ S4 and S5 with CCBA 3.0L
	** 2008+ A5, 2009+ A4, 2011 A6 with CALA 3.2L		** 2008+ A5, 2009+ A4, 2011 A6 with CALA 3.2L
	** 2009+ A6 ~~CCAA~~ 3.0L ~~Supercharged~~		** 2009-2011 A6 CCAA 3.0L
			** 2012 A6/A7 CGXB 3.0L
			** 2013+A6/A7 CTUA 3.0L
	** 2009+ Q5 CALB 3.2L		** 2009+ Q5 CALB 3.2L
	** 2011+ Q7 CJWE, CJWC, CJWB 3.0L		** 2011+ Q7 CJWE, CJWC, CJWB 3.0L



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

Dana: /* Special Notes */

2015-09-14T20:00:54Z

Special Notes

← Older revision		Revision as of 20:00, 14 September 2015
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	* When found in the following '''NAR''' (North American Market) Audi models listed below check to see if TPI 2033001 is applicable:		* When found in the following '''NAR''' (North American Market) Audi models listed below check to see if TPI 2033001 is applicable:

	*'''Audi''' TPI ~~2025633~~ pertains to [[P0491]] and [[P0492]] stored at same time on the following vehicles with more than 15,000 miles:		*'''Audi''' TPI 2033001 pertains to [[P0491]] and [[P0492]] stored at same time on the following vehicles with more than 15,000 miles:
	** 2010+ S4 and S5 with CCBA 3.0L		** 2010+ S4 and S5 with CCBA 3.0L
	** 2008+ A5, 2009+ A4, 2011 A6 with CALA 3.2L		** 2008+ A5, 2009+ A4, 2011 A6 with CALA 3.2L

Dana: Created page with "FORCETOC == P0491 - Secondary Air Injection System: Bank 1 == === P0491 - Secondary Air Injection System: Bank 1: Insufficient Flow === ==== Possible Symptoms ==== * Ma..."

2015-02-19T20:24:55Z

Created page with "__FORCETOC__ == P0491 - Secondary Air Injection System: Bank 1 == === P0491 - Secondary Air Injection System: Bank 1: Insufficient Flow === ==== Possible Symptoms ==== * Ma..."

New page

__FORCETOC__
== P0491 - Secondary Air Injection System: Bank 1 ==

=== P0491 - Secondary Air Injection System: Bank 1: Insufficient Flow ===

==== Possible Symptoms ====

* Malfunction Indicator Light (MIL) active

==== Possible Causes ====

* Fuse or relay for Secondary Air Injection Pump faulty
* Hose(s)/Piping between Secondary Air Injection Pump and Combi (Secondary Air Injection) Valve leaking
* Secondary Air Injection Solenoid(s) faulty
* Secondary Air Injection Pressure Sensor faulty
* Combi Valve(s) faulty
* Secondary Air Injection ports in the cylinder head(s) plugged with carbon ''See Special Notes''

==== Possible Solutions ====

* Check fuse and relay for Secondary Air Injection Pump system.
* Check hose(s)/Piping between Secondary Air Injection Pump and Combi Valve
* Check Secondary Air Injection Solenoid(s)
* Check Secondary Air Injection Pressure Sensor
* Check Combi Valve(s)
* Clean Secondary Air Injection ports in the cylinder head(s) if obstructed with carbon ''See Special Notes''

==== Special Notes ====

* When found in the following '''NAR''' (North American Market) Audi models listed below check to see if TPI 2033001 is applicable:

*'''Audi''' TPI 2025633 pertains to [[P0491]] and [[P0492]] stored at same time on the following vehicles with more than 15,000 miles:
** 2010+ S4 and S5 with CCBA 3.0L
** 2008+ A5, 2009+ A4, 2011 A6 with CALA 3.2L
** 2009+ A6 CCAA 3.0L Supercharged
** 2009+ Q5 CALB 3.2L
** 2011+ Q7 CJWE, CJWC, CJWB 3.0L

[[Category:Fault Codes]]