18613/P2181/008577 - Revision history

Peter at 15:55, 24 October 2013

2013-10-24T15:55:49Z

← Older revision		Revision as of 15:55, 24 October 2013
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	== 18613/P2181/008577 - Performance Malfunction in Cooling System ==		== 18613/P2181/008577 - Performance Malfunction in Cooling System ==

			==== Possible Symptoms ====

			* Malfunction Indicator Light (MIL) ON
			* Reduced Heater Output - Cold toes
			* Incorrect Temperature Gauge Readings
			* Increased Emissions


	==== Possible Causes ====		==== Possible Causes ====
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	''Note'': This fault code sets when engine coolant temperature mapping is lower and out of expected range based on operating conditions of the engine.		''Note'': This fault code sets when engine coolant temperature mapping is lower and out of expected range based on operating conditions of the engine.
	* For example: Engine warms up, thermostat opens and stays open, coolant temperature drops below normal operating range. The ECM knows the coolant temperature should stay within 80.0...110.0 °C typically after warm up. Thus a drop in coolant temperature below normal operating temperature is not possible without a '''~~malfunction~~ in ~~cooling system~~'''.		* For example: Engine warms up, thermostat opens and stays open, coolant temperature drops below normal operating range. The ECM knows the coolant temperature should stay within 80.0...110.0 °C typically after warm up. Thus a drop in coolant temperature below normal operating temperature is not possible without a '''Malfunction in Cooling System'''.



	==== Possible Solutions ====		==== Possible Solutions ====
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	** G83 will increase when the thermostat opens and after G62 reaches operating temperature (80°C)		** G83 will increase when the thermostat opens and after G62 reaches operating temperature (80°C)
	** If G62 and G83 both increase while engine warms up, suspect failed thermostat		** If G62 and G83 both increase while engine warms up, suspect failed thermostat

Peter at 14:36, 24 October 2013

2013-10-24T14:36:55Z

← Older revision		Revision as of 14:36, 24 October 2013
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	== 18613/P2181/008577 - Performance Malfunction in Cooling System ==		== 18613/P2181/008577 - Performance Malfunction in Cooling System ==

			==== Possible Causes ====

			* Faulty Coolant Sensor
			* Faulty Coolant Thermostat
			* Faulty Wiring, Connections

			''Note'': This fault code sets when engine coolant temperature mapping is lower and out of expected range based on operating conditions of the engine.
			* For example: Engine warms up, thermostat opens and stays open, coolant temperature drops below normal operating range. The ECM knows the coolant temperature should stay within 80.0...110.0 °C typically after warm up. Thus a drop in coolant temperature below normal operating temperature is not possible without a '''malfunction in cooling system'''.

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

	* Check Engine Coolant Temperature Sender (~~G62~~)<br>		* Check G62 - Engine Coolant Temperature Sender <br>
			** Inspect wiring for G62 (Coolant Migration, damage, corrosion, etc)

			* Check (if applicable) G83 - Radiator Outlet, Coolant Temperature Sender <br>
			** Inspect wiring for G83 (Coolant Migration, damage, corrosion, etc)

	* Check Coolant Thermostat		* Check Coolant Thermostat
	* ~~Check~~ Engine ~~Cooling System~~		** Use Graph function in VCDS, Measuring Value Blocks - MVB
	** ~~Put the key on, fan speed on~~ 1, and ~~push the~~ a~~/c switch. Are~~ both ~~fans kicking on? If not~~, ~~you found the problem.~~		** Start Engine cold, graph Coolant Temperature Sender (G62) Typically MVB Group-001
	** ~~Put the key~~ on ~~and fan speed on 1 with temperature set to hot. Does heat come out readily from the vents?~~		** Hold RPM around 1,500rpm and watch coolant temp increase in Graph until thermostat opens, indicated by a slight drop in coolant temp
	*** ~~No. Probably~~ the ~~water pump is gone.~~		** If coolant temp drops below minimum operating temperature (80°C) or never reaches operating temperature, (verified by external thermometer) suspect failed thermostat
	*** Yes. Probably the thermostat ~~is gone.~~
			* Vehicles with both G62-Engine Outlet, Coolant Temperature Sensor and G83-Radiator Outlet, Coolant Temperature Sensor
			** Use Measuring Value Block group MVB-130 instead on MVB-001
			** G62 should increase in Temperature before G83 increase when engine coolant is cold
			** G83 will increase when the thermostat opens and after G62 reaches operating temperature (80°C)
			** If G62 and G83 both increase while engine warms up, suspect failed thermostat


	==== Special Notes ====		==== Special Notes ====
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	** Freeze Frame data stored at +140*C is generally an indication of a faulty ECT or wiring.		** Freeze Frame data stored at +140*C is generally an indication of a faulty ECT or wiring.
	** Freeze Frame data stored with in the 68C ~ 80C range is an indication that the vehicle was close to, but not within, the cooling systems normal operation range. The Thermostat itself or Cooling system components may be at fault.		** Freeze Frame data stored with in the 68C ~ 80C range is an indication that the vehicle was close to, but not within, the cooling systems normal operation range. The Thermostat itself or Cooling system components may be at fault.



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

Dana at 18:48, 24 January 2011

2011-01-24T18:48:02Z

← Older revision		Revision as of 18:48, 24 January 2011
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	** Freeze Frame data stored at -40*C is generally an indication of a faulty ECT or wiring.		** Freeze Frame data stored at -40*C is generally an indication of a faulty ECT or wiring.
	** Freeze Frame data stored at +140*C is generally an indication of a faulty ECT or wiring.		** Freeze Frame data stored at +140*C is generally an indication of a faulty ECT or wiring.
	** Freeze Frame data stored with in the 68* ~ 80* range is an indication that the vehicle was close to, but not within, the cooling systems normal operation range. The Thermostat itself or Cooling system components may be at fault.		** Freeze Frame data stored with in the 68C ~ 80C range is an indication that the vehicle was close to, but not within, the cooling systems normal operation range. The Thermostat itself or Cooling system components may be at fault.


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

Dana at 18:47, 24 January 2011

2011-01-24T18:47:33Z

← Older revision		Revision as of 18:47, 24 January 2011
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	*** No. Probably the water pump is gone.		*** No. Probably the water pump is gone.
	*** Yes. Probably the thermostat is gone.		*** Yes. Probably the thermostat is gone.

			==== Special Notes ====

			* Check the stored Freeze Frame data with this fault code. Freeze Frame information will be found in the fault code description (if the module supports it) or in Generic OBD-II if the vehicle complies with those regulations.
			** Freeze Frame data stored at -40*C is generally an indication of a faulty ECT or wiring.
			** Freeze Frame data stored at +140*C is generally an indication of a faulty ECT or wiring.
			** Freeze Frame data stored with in the 68* ~ 80* range is an indication that the vehicle was close to, but not within, the cooling systems normal operation range. The Thermostat itself or Cooling system components may be at fault.


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

Andy: /* Possible Solutions */

2010-08-10T19:09:12Z

Possible Solutions

← Older revision		Revision as of 19:09, 10 August 2010
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	* Check Engine Cooling System		* Check Engine Cooling System
	** Put the key on, fan speed on 1, and push the a/c switch. Are both fans kicking on? If not, you found the problem.		** Put the key on, fan speed on 1, and push the a/c switch. Are both fans kicking on? If not, you found the problem.
	** Put the key on and fan speed on 1. Does heat come out readily from the vents?		** Put the key on and fan speed on 1 with temperature set to hot. Does heat come out readily from the vents?
	*** No. Probably the water pump is gone.		*** No. Probably the water pump is gone.
	*** Yes. Probably the thermostat is gone.		*** Yes. Probably the thermostat is gone.

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

Gerrit Speek at 15:04, 23 December 2007

2007-12-23T15:04:46Z

← Older revision		Revision as of 15:04, 23 December 2007
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	* Check Coolant Thermostat		* Check Coolant Thermostat
	* Check Engine Cooling System		* Check Engine Cooling System
			** Put the key on, fan speed on 1, and push the a/c switch. Are both fans kicking on? If not, you found the problem.
			** Put the key on and fan speed on 1. Does heat come out readily from the vents?
			*** No. Probably the water pump is gone.
			*** Yes. Probably the thermostat is gone.

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

RtWiKiSyS0p at 09:14, 18 April 2006

2006-04-18T09:14:53Z

New page

__FORCETOC__
== 18613/P2181/008577 - Performance Malfunction in Cooling System ==

==== Possible Solutions ====

* Check Engine Coolant Temperature Sender (G62)<br>
* Check Coolant Thermostat
* Check Engine Cooling System

[[Category:Fault Codes]]