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Im trying to change HO2 sensor number 1 but cant seem to find any information on where it is located.

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It depends on the engine. but its on bank 1 before the converter.

Posted on Sep 01, 2010

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1 Answer

Where is h02 sensor on 99 4cl. camry


although the picture is of a 6 cly model the location is the same HO2 sensors are mounted in the exhaust system before and after the catalyst HO2..1 is the up stream Before the cat and HO2...2 is down stream of the cat if your code is bank one sensor 1 its the upstream and bank one sensor 2 is the downstream

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Jan 03, 2013 | 1997 Saturn SL

1 Answer

How to repair the p1646


Looks like Lambda sensor fault,

Fault Code:- P1646 Indicates a Power-train fault


The fault is generally due to a problem in the Computer & Output Circuit area


Fault Description: ECM HO2 Sensor control malfunction -bank 1 upstream (1/1)

Action of ECM:- ECM Default:- HO1S 1/1 control circuit inhibited


After clearing the DTC, complete the Drive vehicle for 10 minutes
Check for a reoccurrence of fault DTC.


Possible Fault:- HO2 Sensor 1/1 heater failure HO2 Sensor 1/1 sensing circuit: short circuit to ground, short circuit to high voltage, open circuit ECM Failure

See http://www.bluejag.co.uk for more info

Aug 30, 2011 | 2002 Jaguar X-Type

1 Answer

Hi have a jaguae x type with fault code p1647 changed the sensor with the grey plug and light has *** bk on can u please help


Fault Code:- P1647 Indicates a Power-train fault


The fault is generally due to a problem in the Computer & Output Circuit area


Fault Description: ECM HO2 Sensor control malfunction -bank 2 upstream (2/1)

Action of ECM:- ECM Default:- HO2S 2/1 control circuit inhibited


After clearing the DTC, complete the Drive vehicle for 10 minutes
Check for a reoccurrence of fault DTC.


Possible Fault:- HO2 Sensor 2/1 heater failure HO2 Sensor 2/1 sensing circuit: short circuit to ground, short circuit to high voltage, open circuit ECM Failure

Jun 15, 2011 | 2002 Jaguar X-Type

1 Answer

I have both a P1111 and P1646, what are these and how do you fix them


You can check out all fault codes at http://www.bluejag.co.uk

looks like faulty Lamda sensor.


Fault Code:- P1646 Indicates a Power-train fault


The fault is generally due to a problem in the Computer & Output Circuit area


Fault Description: ECM HO2 Sensor control malfunction -bank 1 upstream (1/1)

Action of ECM:- ECM Default:- HO1S 1/1 control circuit inhibited


After clearing the DTC, complete the Drive vehicle for 10 minutes
Check for a reoccurrence of fault DTC.


Possible Fault:- HO2 Sensor 1/1 heater failure HO2 Sensor 1/1 sensing circuit: short circuit to ground, short circuit to high voltage, open circuit ECM Failure

Jun 01, 2011 | 2003 Jaguar X-Type

1 Answer

Management light on fault found is p1646 what


You can check out fault codes at http://www.bluejag.co.uk.
Looks like faulty Lamda Sensor.

Fault Code:- P1646 Indicates a Power-train fault


The fault is generally due to a problem in the Computer & Output Circuit area


Fault Description: ECM HO2 Sensor control malfunction -bank 1 upstream (1/1)

Action of ECM:- ECM Default:- HO1S 1/1 control circuit inhibited


After clearing the DTC, complete the Drive vehicle for 10 minutes
Check for a reoccurrence of fault DTC.


Possible Fault:- HO2 Sensor 1/1 heater failure HO2 Sensor 1/1 sensing circuit: short circuit to ground, short circuit to high voltage, open circuit ECM Failure

May 28, 2011 | 2003 Jaguar X-Type

1 Answer

1995 Cadi SLS Codes, P0030 & P0036, Ckt Fuse or Relay Defective, checked fuse ok, where is relay located?


Hi there,

P0030 = HO2S Heater Control Circuit (Bank 1 Sensor 1) - No.1 Heated Oxygen sensor on bank 1.
P0036 = HO2S Heater Control Circuit (Bank 1 Sensor 2) - No. 2 Heated Oxygen sensor on bank 1

For both of these to trigger on the same bank, means most likely an Open or Short to Ground condition (somewhere on the Bank 1 circuit) stopping the HO2 sensors from reaching their working temperature.

Check the following in this order:

1) Using a multimeter, check 'continuity' of the Oxygen circuit FUSE terminals (don't rely on visual inspection alone) or replace fuse with a known good one.
2) Check for moisture getting into both oxygen sensor connector terminals (bank 1).
3) Check for good connection at Oxygen sensors (bank 1).
3) Have both heated oxygen sensors on Bank 1 tested (ensure their values are to specification).
4) Check HO2 pin-outs of the PCM for correct voltage.

Only replace the HO2 sensors as a last resort (if out of spec).

Then engine department relay centre & fusebox location is behind the washer bottle, but I believe the HO2 sensors are connected direct to the PCM, not a relay.

Cheers,


"If this has helped you in any way, please rate this solution"

May 07, 2011 | Cadillac Seville Cars & Trucks

1 Answer

Can any one tell me where Bank 2/2 HO2 sensor located on 2002 nissan pathfinder ( passenger or driver side) ? Thanks


The bank refers to the side of the engine. Bank one is always the same side of the engine as the number one cylinder. Bank 2 is alwasy the other side of the engine.

Sensor refers to before the cat or after the cat. Sensor 1 is before the cat and sensor two is after the cat.


So Bank 2 Sensor 2 is on the engine opposite of the number 1 cylinder and after the catalytic converter.

Jan 08, 2011 | 2002 Nissan Pathfinder

2 Answers

Where is the ho2 sensor located?


the o2 sensors are located in the exhaust system, theres one before the cat converter and one after,

Aug 07, 2010 | 2000 Mitsubishi Eclipse

2 Answers

2005 Dodge Magnum error code...


Your heated O2 sensor has a heeater problem most likely. Most likely time to change out your HO2 sensor. Most cars actually have only primary heated. Not sure for this application but would thus assume the primary sensor or otherwise known as precat O2.
With a sensor high you have high voltage back to the pcm thus most likely shorted heating element.

There is an outside chance of a cross short to the ground circuit of your O2 sensor. If after replacing your sensor you still have a problem then start looking for this.

I see you went to the auto parts store and got an HO2 sensor (Should be a 22mm or 7/8" -- same size) and replace the Primary and if that do not solve the problem, then see if you have a heated postcat HO2 if not then see above.

Good luck and hope this helps, oh and Bank 1 is where your #1 cylinder is.

May 13, 2009 | 2006 Dodge Magnum

1 Answer

Jeep won start


check main fuse
year and kind of jeep ?
good luck

Apr 08, 2009 | 1999 Jeep Grand Cherokee

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