Question about 2003 Honda Accord

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Getting PO141 trouble code when scanning! Car '03 accord, 2.4 ltr

Showing- sensor heater circuit bank 1 sensor! Part stores are saying it's the upstream sensor but haynes book says otherwise, downstream sensor; which is the one after the cat! My thought is, on 4 cylender models all sensors will say bank 1; cause it only has one bank! Would be different for V6 models since it comes w/two banks! So, do i change the upstream (before cat) or the downstream (after cat) O2 sensor? Remember getting PO141 code!

Thank you
Amirul

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Both o2 sensors have been replaced with Bosch sensors and now get P0141 code. What next?? Thanks!

Posted on Aug 22, 2009

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Posted on Jun 22, 2009

Testimonial: "Thanks! I figured out po141 is the sensor that goes into the cat after studying few books and trial and error. Part store gave me the wrong info 1st. "

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I spoke to a honda tech , and he confirmed code p0141 on the 4cylinder model is the second sensor.

Posted on Aug 28, 2009

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Circuit bank,,,, #1 sensor... this is the one before the cat.
Tech note replace both if one is bad the other is just as used.

Posted on Jun 25, 2009

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In this case to be honest,I'd replace both. For at the most $60 a piece,just replace them. Use Bosch if available.

Posted on Jun 22, 2009

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1 Answer

I have a 2001 Ford Focus with the codes p0136 and p0141 showing, what should I do?


both codes refer to O2 sensors. PO141 and PO136. 136 is sensor bank 1 sensor 2. 141 is bank 1 sensor 1. so this info will work on both sensors. This code means that the heated circuit in the oxygen sensor on bank 1 decreases time needed to enter closed loop.
As the O2 heater reaches operating temperature, the oxygen sensor responds by switching according to oxygen content of the exhaust surrounding it. The ECM tracks how long it takes for the oxygen sensor to begin switching. It the ECM determines (based on coolant temp) that too much time elapsed before the oxygen sensor began operating properly, it will set P0141. See also: P0135 (Bank 1, Sensor 1).
Symptoms You will likely notice poor fuel economy the illumination of the Check Engine Light.
Causes 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.
Possible Solutions
  • Replace oxygen sensor (cannot repair open or short that occurs internally to sensor)
  • Repair short or open or high resistance in wiring harness or harness connectors

Aug 05, 2015 | 2001 Ford Focus

1 Answer

Needdiagnosis on 02 toyota siena le 3.0 have problem codes p1135,po141


3.0L V6

Sienna
wild guess, the 1MZ engine?



141 fed code is. (it means B1S2 heater is bad,or wire to it cut or shorted.) below is fSM spec. worsd.





HO2S-12 (Bank 1 Sensor 2) Heater Circuit Malfunction








Number of Trips to Set Code: 2

Trouble Code Conditions:

Engine started, engine running, and the PCM detected the HO2S-12 heater current exceeded 2 amps, or that it was 0.25 amps or less.

Possible Causes:



  • * HO2S heater control circuit is open, shorted to ground or power


  • * HO2S heater power circuit is open (check power from the relay)


  • * HO2S heater is damaged or has failed


  • * PCM has failed



then the factory code p1135 same deal,same reasons B1S1





A/F Sensor-11 (Bank 1 Sensor 1) Heater Circuit Malfunction








Number of Trips to Set Code: 2

Trouble Code Conditions:

Engine started, engine running, and the PCM detected the A/F Sensor-11 (A/FS-11) heater current was less than 0.25A, or that it was more than 8.0A at anytime during the CCM test.

Possible Causes:



  • * A/F sensor heater circuit or ground circuit is open


  • * A/F sensor heater power circuit is open


  • * A/F sensor heater is damaged or has failed


  • * PCM has failed




bar stool answer.

both bank 1 senors (oxygen) are bad. if wires are good.



easy answer ,no?



the PCM never lies. the current IS ILLEGAL,(BAD)

the why takes , inspection and ohms checks , FSM shows this..



your next question is where is bank 1,

its on cylinder 1 side.

your next question is , where is cylinder 1,

it the cylinder that sticks out further to crank front pulley.



front 134

front 246

Feb 27, 2014 | Toyota Sienna Cars & Trucks

1 Answer

PO141


Trouble Code: P0141

HO2S-21 (Bank 1 Sensor 1) Heater Circuit Malfunction

Possible Causes:


HO2S heater control circuit is open or shorted to ground.
HO2S heater power circuit open between the heater and PCM.HO2S heater is damaged or has failed.PCM has failed (it controls the heater with a duty cycle signal).The sensor is on the passenger side,that is cylinder number one.

Jan 27, 2013 | 2002 Mazda Millenia

2 Answers

Check engine light. code po141 codepo122


po141, may be a bad o2 sensor, rear sensor after converter. the po 141 is low voltage to tps, try replacing the oyxgen sensor first and then reset the codes and drive if the po141 comes back then replace the tps,

Apr 15, 2010 | 1998 Chevrolet S-10 Pickup

2 Answers

What is that code PO141 AND PO342


Technical Description O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)
What does that mean? This code means that the heated circuit in the oxygen sensor on bank 1 decreases time needed to enter closed loop. As the O2 heater reaches operating temperature, the oxygen sensor responds by switching according to oxygen content of the exhaust surrounding it. The ECM tracks how long it takes for the oxygen sensor to begin switching. It the ECM determines (based on coolant temp) that too much time elapsed before the oxygen sensor began operating properly, it will set P0141. See also: P0135 (Bank 1, Sensor 1).
copyscape.gif Symptoms You will likely notice poor fuel economy the illumination of the Check Engine Light.
Causes 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.
Possible Solutions
  • Replace oxygen sensor (cannot repair open or short that occurs internally to sensor)
  • Repair short or open or high resistance in wiring harness or harness connectors

Dec 01, 2009 | 2000 Isuzu Rodeo

1 Answer

Code po141 heater circut sensor/where do i find this sensor? where is bank 1


code is not for heater circuit,
code p0141=O2 Sensor Heater Circuit Bank 1 Sensor 2
that means its an oxygen sensor located in bank 1 which is the drivers side,sensor 2 means its the downstream sensor after the convertor

Nov 15, 2009 | 1998 Pontiac Grand Am

2 Answers

Emission code po141 what is the problem thanks


P0141 - Heated Oxygen Sensor (HO2S) Heater Performance Bank 1 Sensor 2

HI, this code if for a fouled O2 sensor that you will need to replace asap.

Jun 01, 2009 | 2003 Honda Accord

2 Answers

Sears did a computer eval on our car and gave us codes only


P0135--OXY SENSOR HEATER CIRCUIT(bank 1 sensor 1)
P0141--OXY SENSOR HEATER CIRCUIT(bank 1 sensor 2)
P0155--HEATED OXY SENSOR HEATER CIRCUIT(bank 2 sensor 1)
P0161--HEATED OXY SENSOR HEATER CIRCUIT(bank 2 sensor 2)
P01132--LACK OF HO2S11 SWITCH--SENSOR INDICATES RICH
P01152--LACK OF HO2S21 SWITCH--SENSOR INDICATES RICH

Here are the code definitions.hope it helps.

Nov 15, 2008 | 1997 Mercury Cougar XR7

1 Answer

Trouble codes


Hi Sandra!
The trouble codes listed are defined as:

P0141 Oxygen Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)

P0300 Random/Multiple Cylinder Misfire Detected

P0331 Knock Sensor 2 Circuit Range/Performance (Bank 2)

PO300 & PO331 are possibly symptomatic of issues caused by PO141, which would have a direct influence on the air/fuel mxture... which could cause missing and knocking.

So the first thing I would try is replacing the Bank 2 Oxygen Sensor, after making sure the wiring and connections to that sensor are in good shape.

Does the engine show any physical issues such as loosing coolant, smoking exhaust, overheating? A blown or leaking head gasket on the #2 bank could also present these (among other)
codes.

Good luck and let me know how it goes!

WB

Jun 09, 2008 | 1997 Pontiac Grand Am

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