Question about 2003 Ford Excursion

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What all would cause an O2 sensor heater circuit malfunction?

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  • Ford Master
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Well you can have a bad wire in the circuit, but most times they just burn out . if you replace it don't buy a cheap one and save yourself some headache

Posted on Aug 20, 2010

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  • Ford Master
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Most of the time,if it is a heated o2,then it is bad

Posted on Aug 20, 2010

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Hi i have a 2002 ford ranger and it has teas codes P0446 P0135 P0141 P2195 P0403 P0171


P0446: EVAP System Vent Control Circuit http://www.autocodes.com/p0446_ford.html

P0135: O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1
P0135 Ford O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1

P0141: O2 Heater Circuit Bank 1 Sensor 2
P0141 Ford O2 Heater Circuit Bank 1 Sensor 2

P2195: Oxygen Sensor Signal Biased/Stuck Lean - Bank 1 Sensor 1
http://www.autocodes.com/p2195_ford.html

P0403:Exhaust Gas Recirculation Control Circuit http://www.autocodes.com/p0403_ford.html

P0171: Fuel Injection System Too Lean Bank 1 http://www.autocodes.com/p0171_ford.html

Nov 15, 2016 | 2002 Ford Ranger

3 Answers

2002 dodge caravan engine light on code showing p0135 .please advice.thanks.


  • O2 Sensor Heater Circuit Malfunction - Bank 1 - Sensor 1
  • Basically the ECM Electronic Control Unit has determined your O2 sensor is taking to long to begin reacting properly.
  • The causes could be
  1. O2 heater element resistance could be to high.
  2. An internal short or opening in the heater element.
  3. O2 heater circuit wiring with high resistance.
  4. Open or short to ground in the wiring harness.

  • The fixes are
  1. Check the harness and connector to the O2 sensor for shorts or ground.
  2. Replace that O2 sensor.

  • Bank 1 sensor 1 location for this vehicle is located on the exhaust manifold back by the firewall on top of the manifold..
  • Thank you for using FixYa


Regards, Tony

Jun 19, 2011 | 2002 Dodge Grand Caravan

1 Answer

2001 toyota sienna 02 heater circuit bank 1 sensor 2


Sound like a DTC P0141 - O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)

A code P0141 may mean that one or more of the following has happened:
* open or short to ground in the wiring harness
* O2 heater circuit wiring high resistance
* O2 heater element resistance is high
* Internal short or open in the heater element

Note: Typically a failed catalytic converter does not cause this code. You're more likely to see a P0420 code for a failed converter.

Mar 16, 2011 | 2001 Toyota Sienna

2 Answers

Check enegine light stay s on all the time, here are the codes im getting, if someone could tell me how to fix these that would be great. p0155 p0141 p0136 p0443 p1451 p0135 p0161 p1409


P0155: O2 Sensor heater Circuit Malfunction (bank2 ) Sensor 1.

P0141: O2 Sensor heater Circuit Malfunction (bank1 ) Sensor 2.

P0135: O2 Sensor heater Circuit Malfunction (bank1,Sensor1)

P0136: O2 Sensor Circuit Low voltage (bank1) Sensor 2.

P0443 : Evaporative Emission control System Purge control valve.

P1451: Eavporative Control System Canister vent solenoid Circuit Malfunction.

P0161: O2 Sensor Circuit Low voltage (bank2,Sensor2)

P1409: Electronic Vacuum Regulator (EVR) control circuit malfunction.

change the O2 sensors first,Then check the the EGR Vacuum regulator for any Malfunction. Good luck

Jan 14, 2011 | Ford Mustang Cars & Trucks

2 Answers

Code error number p0135


P0134....O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)


P0135....O2 Sensor Heater Circuit (Bank 1 Sensor 1) heater in the O2 sensor has packed up first sensor before the cat

Nov 27, 2010 | Jeep Grand Cherokee Cars & Trucks

1 Answer

P134, p0141, po300, po130 and po135. 2005 Sunfire.


Given that most of the trouble codes are for the O2 sensor, I think I would change it. The multiple misfires could be because of improper fuel/air mixture caused by a bad sensor. Disconnect the negative(-) battery terminal then change the sensor. Disconnecting the negative(-) should reset the computer and allow the fuel/air mixture to return to default allowing the engine to start.
P0130 - O2 Sensor Circuit Malfunction (Bank 1 Sensor 1)
P0134 - O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)
P0135 - O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
P0141 - O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
P0300 - Random/Multiple Cylinder Misfire Detected

Jun 16, 2010 | 2005 Pontiac Sunfire

1 Answer

I have volvo v70 with obd codes p0505,p0446,p0443,p0135,p0141 what does these mean


PO505 is idle control system malfunction. PO446 is evaporative emissions ( evap) vent system performance . PO443 is evaporative emission control sytem purge control circuit malfunction. PO135 is O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1) PO141 is 02 Sensor Heater Circuit Malfunction (bank 1 sensor 2) Now what does all this mean. It means your O2 sensors are being effected by a problem upstream. Could be a many things. If the engine runs perfect then it may be one bad O2 Sensor but it may not. My advice is to have this diagnosed by a trusted mechanic who has the tools, skill, and knowledge to find the problem and not just throw parts at the problem. You can spend lots of money on this unless you know exactly what is causing all these codes.

Nov 13, 2009 | 1999 Volvo V70

1 Answer

More 99 cougar problems


there is a fuse for the o2 heaters if one of the sensors blew the fuse they will all be out

Feb 14, 2009 | 1999 Mercury Cougar

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