WIS 07.61 Gasoline Engine and Injection System ME - Revision history

Pokseva: moved oxygen sensors to a separate page

2025-08-21T09:32:52Z

moved oxygen sensors to a separate page

@@ Line 1: / Line 1: @@
 Back to '''[[Index]]'''
-==Heated Oxygen Sensors (HO2S) - Gasoline Engine and Injection System==
+== Fuel Injectors ==
-===Description - Heated Oxygen Sensors (HO2S)===
+=== Description ===
 Edit required.

Masood: /* DIY Video - Heated Oxygen Sensors (HO2S) */

2023-10-09T23:01:28Z

DIY Video - Heated Oxygen Sensors (HO2S)

← Older revision		Revision as of 23:01, 9 October 2023
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	{\|		{\|
	\|{{#ev:youtube\|https://youtu.be/VaK4RGenYQA?si=fdHzHuN80n3ExYaL\|320\|center\|Bank 1 or Bank2 O2 Sensor DIY - M113, M112 Engines (By Masood)\|frame}}		\|{{#ev:youtube\|https://youtu.be/VaK4RGenYQA?si=fdHzHuN80n3ExYaL\|320\|center\|Bank 1 or Bank2 O2 Sensor 2 DIY - M113, M112 Engines (By Masood)\|frame}}
	\|}		\|}

Masood at 23:00, 9 October 2023

2023-10-09T23:00:03Z

Masood at 22:57, 9 October 2023

2023-10-09T22:57:54Z

← Older revision		Revision as of 22:57, 9 October 2023
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	[[File:Electrical_Wiring_Diagram_HO2S_Upstream_of_TWC_KAT.JPG\|700px\|center]]		[[File:Electrical_Wiring_Diagram_HO2S_Upstream_of_TWC_KAT.JPG\|700px\|center]]

			===DIY Video - Heated Oxygen Sensors (HO2S)===

			{\|
			\|{{#ev:youtube\|https://youtu.be/VaK4RGenYQA?si=fdHzHuN80n3ExYaL\|320\|center\|Bank 1 or Bank2 O2 Sensor DIY - M113, M112 Engines (By Masood)\|frame}}
			\|}

			The following codes may require replacement of the O2 sensor 2:

			Engine codes for Bank1 Sensor 2:
			P2031 Exhaust Gas Temperature Sensor Circuit (Bank 1 Sensor 2)
			P2032 Exhaust Gas Temperature Sensor Circuit Low (Bank 1 Sensor 2)
			P2033 Exhaust Gas Temperature Sensor Circuit High (Bank 1 Sensor 2)
			P0136 O2 Sensor Circuit Malfunction (Bank 1 Sensor 2)
			P0137 O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)
			P0138 O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)
			P0139 O2 Sensor Circuit Slow Response (Bank 1 Sensor 2)
			P0140 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)
			P0141 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)

			Engine codes for Bank2 Sensor 2 are:
			P0156 O2 Sensor Circuit Malfunction (Bank 2 Sensor 2)
			P0157 O2 Sensor Circuit Low Voltage (Bank 2 Sensor 2)
			P0158 O2 Sensor Circuit High Voltage (Bank 2 Sensor 2)
			P0159 O2 Sensor Circuit Slow Response (Bank 2 Sensor 2)
			P0160 O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 2)
			P0161 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2):




	===DIY Articles - Heated Oxygen Sensors (HO2S)===		===DIY Articles - Heated Oxygen Sensors (HO2S)===

Ricebubbles: /* Cable Lengths */ Added new secion on Part Numbers

2020-03-10T01:25:11Z

Cable Lengths: Added new secion on Part Numbers

← Older revision		Revision as of 01:25, 10 March 2020
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	[[File:W220_Heated_Oxygen_Sensors_Front_or_Upstream_%28Long_Cable%29_Rear_or_Downstream_%28Short_Cable%29.JPG\|500px\|center]]		[[File:W220_Heated_Oxygen_Sensors_Front_or_Upstream_%28Long_Cable%29_Rear_or_Downstream_%28Short_Cable%29.JPG\|500px\|center]]

			====Part Numbers - M113 V8's====
			* Left and Right, Front or Upstream HO2S (Long Cable): Bosch 16274
			* Left and Right, Rear or Downstream HO2S (Short Cable): Bosch 16276

	====Contamination====		====Contamination====

Ricebubbles: /* Description - Heated Oxygen Sensors (HO2S) */

2020-03-10T01:20:32Z

Description - Heated Oxygen Sensors (HO2S)

← Older revision		Revision as of 01:20, 10 March 2020
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	==Heated Oxygen Sensors (HO2S) - Gasoline Engine and Injection System==		==Heated Oxygen Sensors (HO2S) - Gasoline Engine and Injection System==
	===Description - Heated Oxygen Sensors (HO2S)===		===Description - Heated Oxygen Sensors (HO2S)===
	The Heated Oxygen Sensors (HO2S) are commonly known as O2 Sensors or Lambda Sensors. They are used to monitor, in real time, whether the air–fuel ratio of a combustion engine is rich or lean.		The Heated Oxygen Sensors (HO2S) are commonly known as O2 Sensors or Lambda Sensors. They are used to monitor, in real time, whether the air–fuel ratio of a combustion engine is rich or lean. Note: the Upstream 02 Sensors have a dramatic effect on performance and fuel economy but the down stream sensors are only used to monitor the performance of the catalytic converters and emissions.

	They work by producing a voltage from approximately 1.0 V during rich operating conditions to 0.01 V (10 mV) during lean operating conditions. The HO2S is like an open circuit and produces no voltage when it is below 360C (600F).		They work by producing a voltage from approximately 1.0 V during rich operating conditions to 0.01 V (10 mV) during lean operating conditions. The HO2S is like an open circuit and produces no voltage when it is below 360C (600F).

Ricebubbles: Added link Back to Index

2016-03-28T04:50:38Z

Added link Back to Index

← Older revision		Revision as of 04:50, 28 March 2016
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			Back to '''[[Index]]'''

	==Heated Oxygen Sensors (HO2S) - Gasoline Engine and Injection System==		==Heated Oxygen Sensors (HO2S) - Gasoline Engine and Injection System==
	===Description - Heated Oxygen Sensors (HO2S)===		===Description - Heated Oxygen Sensors (HO2S)===

Ricebubbles at 12:17, 9 April 2015

2015-04-09T12:17:02Z

← Older revision		Revision as of 12:17, 9 April 2015
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	==~~W220~~ Heated Oxygen Sensors (HO2S) ~~or Lambda Sensors~~==		==Heated Oxygen Sensors (HO2S) - Gasoline Engine and Injection System==
	===Description - Heated Oxygen Sensors (HO2S)===		===Description - Heated Oxygen Sensors (HO2S)===
	* G3/3 Left and G3/4 Right are the Heated Oxygen Sensors before or upstream of the TWC (KAT).		The Heated Oxygen Sensors (HO2S) are commonly known as O2 Sensors or Lambda Sensors. They are used to monitor, in real time, whether the air–fuel ratio of a combustion engine is rich or lean.
	* G3/5 Left and G3/6 Right are the Heated Oxygen Sensors after or downstream of the TWC (KAT).
			They work by producing a voltage from approximately 1.0 V during rich operating conditions to 0.01 V (10 mV) during lean operating conditions. The HO2S is like an open circuit and produces no voltage when it is below 360C (600F).

			The powertrain control module (PCM) supplies a bias voltage of about 450 mV between the heated oxygen sensor (HO2S) high signal and low signal circuits. The HO2S varies the voltage within a range of about 1,000 mV when the exhaust is rich, down through about 10 mV when exhaust is lean. The PCM constantly monitors the HO2S signal during Closed Loop operation and compensates for a rich or lean condition by decreasing or increasing the fuel injector pulse width as necessary. If the HO2S voltage remains at or near the 450 mV bias for an extended period of time, P0154 diagnostic trouble code (DTC) will be set.

			http://en.wikipedia.org/wiki/Oxygen_sensor

			===Location - Heated Oxygen Sensors (HO2S)===
			* G3/3 Left and G3/4 Right are the Heated Oxygen Sensors before or upstream of the Catalytic Converter TWC (KAT).
			* G3/5 Left and G3/6 Right are the Heated Oxygen Sensors after or downstream of the Catalytic Converter TWC (KAT).

	[[File:W220_O2_Heated_Oxygen_Sensors.JPG\|500px\|center]]		[[File:W220_O2_Heated_Oxygen_Sensors.JPG\|500px\|center]]

	===~~How It Works~~ - Heated Oxygen Sensors (HO2S)===		===Issues - Heated Oxygen Sensors (HO2S)===
	~~The Heated Oxygen Sensor (~~HO2S~~) or Lambda Sensor produces~~ a ~~voltage from approximately 1.0 V during rich operating conditions to 0.01 V (10 mV) during lean operating conditions. The HO2S is like an open circuit and produces no voltage when it is below 360C~~ (~~600F~~).		HO2S have a limited lifetime, typically 160,000 Km (100,000 miles).

	~~The powertrain control module (PCM) supplies~~ a ~~bias voltage of about 450 mV between the heated oxygen sensor (~~HO2S~~) high signal and low signal circuits~~. The HO2S ~~varies the voltage within~~ a ~~range of about 1,000 mV when the exhaust is rich, down through about 10 mV when exhaust is lean~~. The ~~PCM constantly monitors the HO2S signal during Closed Loop operation and compensates for~~ a ~~rich or lean condition by decreasing or increasing the fuel injector pulse width~~ as ~~necessary~~. ~~If the HO2S voltage remains at or near the 450 mV bias for an extended period of time, P0154 diagnostic trouble code (DTC) will be set~~.		Symptoms of a failing HO2S include:
			* Warning light on dash,
			* Increased tailpipe emissions,
			* Increased fuel consumption,
			* Hesitation on acceleration,
			* Stalling,
			* Rough idling.

			====Heating Element Failure====
			The HO2S contains a heating element which often fails by going open circuit. The resistance of a typical W220 heater element has been measured as 9.2 Ohms. The specified heater resistance is TBD.

	~~===Resistance of Heater~~ - ~~Heated Oxygen Sensors~~ (~~HO2S~~)~~===~~		Resulting Fault Codes are:
	* ~~Measured as 9.2 Ohms, specified value TBD.~~		* P20BF-004 G3/3 Left HO2S before TWC (KAT) open circuit in sensor heater line (P0156)
			* P2082-004 G3/3 Left HO2S before TWC (KAT) open circuit (P0154)

	===~~Heated Oxygen Sensor~~ Cable Lengths ~~- Heated Oxygen Sensors (HO2S)~~===		====Cable Lengths====
	~~Note two~~ different lengths.		The W220 HO2S are electrically interchangeable but have different cable lengths.
	* G3/3 Left and G3/4 Right Front or Upstream HO2S (Long Cable). Wire length: 440mm (17.3 inches) sensor washer to end of connector. Total length: 460mm.		* G3/3 Left and G3/4 Right Front or Upstream HO2S (Long Cable). Wire length: 440mm (17.3 inches) sensor washer to end of connector. Total length: 460mm.
	* G3/5 Left and G3/6 Right Rear or Downstream HO2S (Short Cable). Wire length: 322mm (12.7 inches) sensor washer to end of connector. Total length: 340mm.		* G3/5 Left and G3/6 Right Rear or Downstream HO2S (Short Cable). Wire length: 322mm (12.7 inches) sensor washer to end of connector. Total length: 340mm.

	[[File:W220_Heated_Oxygen_Sensors_Front_or_Upstream_%28Long_Cable%29_Rear_or_Downstream_%28Short_Cable%29.JPG\|500px\|center]]		[[File:W220_Heated_Oxygen_Sensors_Front_or_Upstream_%28Long_Cable%29_Rear_or_Downstream_%28Short_Cable%29.JPG\|500px\|center]]

			====Contamination====
			Contamination of the oxygen sensor can result from the use of an inappropriate RTV or silicon sealer (not oxygen sensor safe) or excessive engine coolant or oil consumption.
			* To check remove the HO2S and visually inspect the portion of the sensor exposed to the exhaust stream in order to check for contamination.
			* If contaminated, the portion of the sensor exposed to the exhaust stream will have a white powdery coating.
			* Silicon contamination causes a high but false HO2S signal voltage (rich exhaust indication). The control module will then reduce the amount of fuel delivered to the engine, causing a severe drive-ability problem.
			* Eliminate the source of contamination before replacing the oxygen sensor.

	===Connector Pin Diagram - Heated Oxygen Sensors (HO2S)===		===Connector Pin Diagram - Heated Oxygen Sensors (HO2S)===
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	[[File:Electrical_Wiring_Diagram_HO2S_Upstream_of_TWC_KAT.JPG\|700px\|center]]		[[File:Electrical_Wiring_Diagram_HO2S_Upstream_of_TWC_KAT.JPG\|700px\|center]]

	~~===Fault Codes - Heated Oxygen Sensors (HO2S)===~~
	* P20BF-004 G3/3 Left HO2S before TWC (KAT) open circuit in sensor heater line (P0156)
	* P2082-004 G3/3 Left HO2S before TWC (KAT) open circuit (P0154)

	~~===Contamination Note===~~

	Contamination of the oxygen sensor can result from the use of an inappropriate RTV sealant (not oxygen sensor safe) or excessive engine coolant or oil consumption. Remove the HO2S and visually inspect the portion of the sensor exposed to the exhaust stream in order to check for contamination. If contaminated, the portion of the sensor exposed to the exhaust stream will have a white powdery coating. Silicon contamination causes a high but false HO2S signal voltage (rich exhaust indication). The control module will then reduce the amount of fuel delivered to the engine, causing a severe driveability problem. Eliminate the source of contamination before replacing the oxygen sensor.


	===DIY Articles - Heated Oxygen Sensors (HO2S)===		===DIY Articles - Heated Oxygen Sensors (HO2S)===
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	http://www.hotrodlane.cc/New%20LS%20Links%20Page/LS%20trouble%20codes/DTC%20P0154.htm		http://www.hotrodlane.cc/New%20LS%20Links%20Page/LS%20trouble%20codes/DTC%20P0154.htm

			==Fuel Injectors - Gasoline Engine and Injection System==
			===Description - Fuel Injectors===
			Edit required.

Ricebubbles: /* Electrical Wiring Diagram HO2S Upstream of TWC [KAT] */

2015-04-09T11:42:06Z

Electrical Wiring Diagram HO2S Upstream of TWC [KAT]

← Older revision		Revision as of 11:42, 9 April 2015
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	===Electrical Wiring Diagram HO2S Upstream of TWC [KAT]===		===Electrical Wiring Diagram HO2S Upstream of TWC [KAT]===

	~~http~~:~~//w220.ee/images/b/bb/~~Electrical_Wiring_Diagram_HO2S_Upstream_of_TWC_KAT.JPG		[[File:Electrical_Wiring_Diagram_HO2S_Upstream_of_TWC_KAT.JPG\|700px\|center]]

	===Fault Codes - Heated Oxygen Sensors (HO2S)===		===Fault Codes - Heated Oxygen Sensors (HO2S)===

Ricebubbles: /* Connector Pin Diagram - Heated Oxygen Sensors (HO2S) */

2015-04-09T11:41:09Z

Connector Pin Diagram - Heated Oxygen Sensors (HO2S)

← Older revision		Revision as of 11:41, 9 April 2015
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	===Connector Pin Diagram - Heated Oxygen Sensors (HO2S)===		===Connector Pin Diagram - Heated Oxygen Sensors (HO2S)===

	~~http~~:~~//w220.ee/images/a/a2/~~O2_Sensor_Connector_Pin_Diagram.JPG		[[File:O2_Sensor_Connector_Pin_Diagram.JPG\|400px\|center]]

	HO2S Wire Colours		HO2S Wire Colours

← Older revision		Revision as of 23:00, 9 October 2023
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	Engine codes for Bank1 Sensor 2:		Engine codes for Bank1 Sensor 2:
	P2031 Exhaust Gas Temperature Sensor Circuit (Bank 1 Sensor 2)		* P2031 Exhaust Gas Temperature Sensor Circuit (Bank 1 Sensor 2)
	P2032 Exhaust Gas Temperature Sensor Circuit Low (Bank 1 Sensor 2)		* P2032 Exhaust Gas Temperature Sensor Circuit Low (Bank 1 Sensor 2)
	P2033 Exhaust Gas Temperature Sensor Circuit High (Bank 1 Sensor 2)		* P2033 Exhaust Gas Temperature Sensor Circuit High (Bank 1 Sensor 2)
	P0136 O2 Sensor Circuit Malfunction (Bank 1 Sensor 2)		* P0136 O2 Sensor Circuit Malfunction (Bank 1 Sensor 2)
	P0137 O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)		* P0137 O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)
	P0138 O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)		* P0138 O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)
	P0139 O2 Sensor Circuit Slow Response (Bank 1 Sensor 2)		* P0139 O2 Sensor Circuit Slow Response (Bank 1 Sensor 2)
	P0140 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)		* P0140 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)
	P0141 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)		* P0141 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)

	Engine codes for Bank2 Sensor 2 are:		Engine codes for Bank2 Sensor 2 are:
	P0156 O2 Sensor Circuit Malfunction (Bank 2 Sensor 2)		* P0156 O2 Sensor Circuit Malfunction (Bank 2 Sensor 2)
	P0157 O2 Sensor Circuit Low Voltage (Bank 2 Sensor 2)		* P0157 O2 Sensor Circuit Low Voltage (Bank 2 Sensor 2)
	P0158 O2 Sensor Circuit High Voltage (Bank 2 Sensor 2)		* P0158 O2 Sensor Circuit High Voltage (Bank 2 Sensor 2)
	P0159 O2 Sensor Circuit Slow Response (Bank 2 Sensor 2)		* P0159 O2 Sensor Circuit Slow Response (Bank 2 Sensor 2)
	P0160 O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 2)		* P0160 O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 2)
	P0161 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2):		* P0161 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2):




	===DIY Articles - Heated Oxygen Sensors (HO2S)===		===DIY Articles - Heated Oxygen Sensors (HO2S)===