Question about 1991 Honda Prelude

1 Answer

White smoke from exhaust and smell gas fumes

Mcgyver465 or anyone,
My car is showing code 41 which is "heater switch" to the Oxygen sensor.
If this switch was bad would it cause these symtpoms? . .
Somebody keeps telling me that I need a new catalytic converter or
test pipe.If there was a problem w/ the CConv , would that show up
as a seperate code on my computer?
thanks
D

Posted by on

  • cmtlady222 May 10, 2009

    motor1258,
    Sorry I confused you and myself with the question.
    My car was showing a code 41 which is the heater switch
    to the O2 sensor .. .well, i had someone just put one in (02 sensor)
    so when I had it hooked up to a scanner that showed 02 problem,
    i said "can't be, I just replaced that' , they said you could have
    gotten a bad once or the wiring to the 02 might be bad,
    so told the guy that works on my car this and he replace
    the 02 sensor a 2nd time. . .(((( .problem i still have is
    my car is blowing white smoke from the exhaust and I smell
    very strong gas/exhaust fumes in my car))))). What could be
    causing this? IT's not the catalytic converter either becuae
    he used a big pipe and cleaned it out. hope this clairifies the original question.
    Thanks
    D


    Originally posted . . . .
    My car is showing code 41 which is "heater switch" to the Oxygen sensor.
    If this switch was bad would it cause these symtpoms? . .
    Somebody keeps telling me that I need a new catalytic converter or
    test pipe.If there was a problem w/ the CConv , would that show up
    as a seperate code on my computer?


  • Mike Butler
    Mike Butler May 11, 2010

    Are yo getting white smoke from exhaust & smell of fuel as heading states?

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  • Honda Master
  • 6,674 Answers

A plugged catalytic converter can set codes, but I think we need to concentrate on smoke right now. That's not saying that the converter wasn't a partial, or the cause of the white smoke. Has your oil level or coolant level been going down, or up recently, since this all started ?
You say he cleaned all the insides of the catalytic converter out, so there is no blockage there now, correct? Did you erase the code when you replaced the oxygen sensor, and it came back again? Finally, if you have white smoke rolling out your exhaust, it is usually caused by oil or coolant consumption getting into the cylinder, which could also be causing oxygen sensor to foul up & cause a code. I'd concentrate on finding the cause of the white smoke first. Cooling system pressure test, engine compression check should tell you , but so should consumption of oil or coolant increase. If the problem originated at the converter (plugged) it may have caused a blown head gasket for one thing. I'll wait for your reply.

Posted on May 10, 2009

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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

Got Honda accord 2000 code po135 replaced 02 sensor and stil show same code



How to Diagnose a P0135 -Heater
Performance Bank 1 Sensor 1 (GM 3.5L)
January 31, 2012 Updated: October 29, 2014 Written by: Abraham Torres-Arredondo Article Id: 371

image_1.gifIf your check engine light is on and you have a diagnostic trouble code P0135 stored in the PCM's memory... then you've come to the right place to test and troubleshoot the upstream oxygen sensor.
A P0135 DTC says: HO2S Heater Performance Bank 1 Sensor 1... and this means that the PCM (Powertrain Control Module = Fuel Injection Computer) has detected a problem with the front oxygen sensor's heater element or a problem in the heater's circuit (wires).
In this tutorial, I'll show you how to check the oxygen (O2) sensor's heater element and the two circuits that feed it with power (10 to 12 Volts) and ground with a multimeter.
In case you're wondering, where the oxygen (O2) sensor that the code P0135 is accusing of being BAD is... this bad boy is located on the exhaust manifold and before the catalytic converter.
To help you navigate this article, here are its main points:
  1. Symptoms of a BAD Oxygen Sensor Heater Element.
  2. What Tools Do I Need to Test Code P0135?
  3. What Does the Heater Inside the Oxygen Sensor Do?
  4. Circuit Descriptions of the Downstream Oxygen Sensor.
  5. Start Here.
  6. TEST 1: Oxygen Sensor Bank 1 Sensor 1 Test.
  7. TEST 2: Checking 12 Volts to O2 Heater.
  8. TEST 3: Checking the O2 Heater's Ground Circuit.
  9. TEST 4: Ohming the O2 Heater Element.
  10. P0135 O2 Sensor Heater Test Summary.
Buying a Digital Multimeter for Automotive Diagnostic Testing (found at: easyautodiagnostics.com).
  • Scan Tool.
    1. Don't have one?... check out my recommendation: Abe's Scan Tool Recommendation.
  • Wire Piercing Probe.
    1. Although this tool is not an absolute must, if you do buy one, you'll realize just how easy it makes testing the voltages inside the wires.
    2. If you need to see what this tool looks like, you can see it here:Wire Piercing Probe.
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  • Applies To:
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    Buick Vehicles:
    • Rainier 4.2L
      • 2004, 2005
    Chevrolet Vehicles:
    • Colorado 3.5L
      • 2004, 2005
    • Trailblazer
      • 2004, 2005
    3.5L image_thumb_home_page_1.jpg
    How To Test for a Blown Head Gasket (GM 3.5L, 4.2L)
    How to Test the MAF Sensor and Codes: P0100, P0101, P0102, P0103
    How To Test for a Blown Head Gasket (GM 3.5L -FWD)
    All Articles: 3.5L "A day without sunshine is like, you know, night"
    Steve Martin
    MORE TUTORIALS:
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    Feb 03, 2015 | 2000 Honda Accord

    1 Answer

    Code 41


    At a repair shop that knows how to diagnose a vehicle
    & not throw parts at codes, when you don't know why the codes were set

    Jun 19, 2013 | 1991 Honda Accord

    1 Answer

    Car was running then it stopped starting it turns over fine but theres no sign of a spark


    according to this

    http://www.acuralegendwiki.org/index.php/G2:_FAQ:_Error_Codes_And_Definitions

    41 Left Heated Oxygen Sensor Heater 42 Right Heated Oxygen Sensor Heater
    and

    15 Ignition Output Signal

    So you have a couple problems. The car won't start because more than likely the ignition switch has gone bad and needs replacing.

    The O2 sensors will cause your CEL to be on and these will need to be replaced as well.

    Feb 07, 2013 | 1993 Acura Legend

    1 Answer

    I have a lexus es 300, 2002. the check engine light jest came on, and i had it checked at autozone. P1135 code came up, "Fuel sensor heater circuit malfunction". the print out said there could be...


    #1 stay away from Ottozoo. #2 have a good repair shop check it out. Most likely the A/F ratio sensor (oxygen sensor) is bad. the BLACK wire is power for the heater, so if the BLACK wire has power, replace the A/F ratio sensor.

    Sep 21, 2011 | Lexus ES 300 Cars & Trucks

    1 Answer

    What is diagnostic procedures for DTC p0135 & p0141


    Oxygen Sensor problems... P0135 (Bank 1, Sensor 1) and P0141 (Bank 1, Sensor 2)

    P0135 - Oxygen O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)
    This code refers to the front oxygen sensor on Bank 1. The heated circuit in the oxygen sensor 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 P0135.

    Symptoms: You will likely notice poor fuel economy the illumination of the MIL.

    Causes: A code P0135 may mean that one or more of the following has happened:
    O2 Heater element resistance is high
    Internal short or open in the heater element
    O2 heater circuit wiring high resistance
    open or short to ground in the wiring harness

    Possible Solutions:
    Repair short or open or high resistance in wiring harness or harness connectors
    Replace oxygen sensor (cannot repair open or short that occurs internally to sensor)



    P0141 - O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)
    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.

    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


    Hope this helps (remember to rate this answer)..

    May 11, 2011 | 2000 Nissan Maxima

    1 Answer

    I pulled codes with a OBDII code reader and it gave me three codes. (1) P1166- Primary HO2S (No.1) Heater System Electrical. (2) PO134- O2 Sensor circut no activity detected (bank 1 Sensor 1). (3) PO845-...


    You have a burned Oxygen sencer, and the transmission pressure sencer is bad also. Your heater has a bad switchover circuit. Hope this helps.

    Feb 25, 2011 | 2003 Honda CR-V

    1 Answer

    I need a honda car code , i can't turn on my radio


    service manual.
    Code Description Possible Cause
    0 ECU / ECU signal No signal to ECU
    1 Oxygen sensor circuit Oxygen sensor or circuit, ECU
    2 Oxygen sensor circuit Oxygen sensor or circuit, ECU
    3 MAP sensor circuit Map sensor circuit
    4 CKP sensor / engine speed (RPM) Crank angle sensor or circuit, ECU
    sensor
    5 MAP sensor circuit MAP sensor or circuit, mechanical
    problem
    6 ECT sensor circuit ECT sensor or circuit, automatic
    transaxle control unit
    7 TPS / Angle Sensor TPS sensor or circuit, automatic
    transaxle control unit
    8 CKP sensor / engine speed (RPM) Crank angle sensor or circuit, ECU
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    9 CMP sensor CMP sensor or circuit
    10 IAT sensor IAT sensor or circuit
    11 Idle Mixture Adjuster Sensor Idle mixture adjuster sensor or
    circuit
    12 EGR system fault No EGR action, faulty EGR valve
    13 BARO sensor circuit BARO sensor or circuit
    14 Idle Air Control valve circuit / ECU Open or shorted out ignition signal
    circuit / No signal to ECU
    15 Ignition Output signal Open or shorted ignition output
    signal circuit
    16 Fuel Injector Circuit Open or shorted fuel injector
    circuit
    17 VSS circuit VSS sensor or circuit
    18 Ignition Timing Adjuster Open or shorted signal circuit
    19 A/T Lock-up control solenoid Open or shorted signal circuit,
    Lock-up control solenoid lock-up solenoid
    20 Electrical Load Detector / Sensor Electrical load detector or circuit
    Honda/Acura
    Fault Code Definitions (21 - 59)
    Chapter 3 22
    Code Description Possible Cause
    21 Spool Solenoid Valve Open or shorted signal circuit,
    spool solenoid valve
    22 Valve Timing Electronic Oil Open or shorted signal circuit,
    pressure switch valve timing oil pressure switch
    23 Knock sensor circuit Knock sensor or circuit
    30 AT / ECU communication signal A AT control unit, ECU
    31 AT / ECU communication signal B AT control unit, ECU
    35 Traction control / ECU / signal Traction control module, ECU
    36 Traction control / ECU / signal Traction control module, ECU
    41 Oxygen sensor heater - left side Oxygen sensor / heater or circuit
    42 Oxygen sensor heater - right side Oxygen sensor / heater or circuit
    43 Fuel Supply system - left side Oxygen sensor or circuit, fuel
    system
    44 Fuel Supply system - right side Oxygen sensor or circuit, fuel
    system
    45 Fuel metering - left side Injector control circuit, incorrect
    fuel metering
    46 Fuel metering - right side Injector control circuit, incorrect
    fuel metering
    48 Heated oxygen sensor Oxygen sensor or circuit
    53 Right Knock Sensor Right knock sensor or circuit
    54 CKP sensor 2 CKP sensor 2 or circuit
    59 CMP sensor 2 CMP sensor 2 or circuit

    Dec 28, 2010 | 1994 Honda Accord

    1 Answer

    Blink codes 41 and 43 are coming up. What do these codes mean?


    HI. The codes and their respective definitions are below:

    41 - Primary oxygen sensor heater circuit fault(replace the failed sensor)
    43 - Fuel supply system fault(Check all fuel system related components for faults)

    Aug 12, 2010 | 1992 Honda Accord

    1 Answer

    I just bought a used engine for my 1988 lincoln and its reading history codes of 91, 41, and 34. What are these codes


    91 (engine running) heated oxygen sensor indicates system lean, left side
    91 ( cont. memory) no heated oxygen sensor switching indicated, left side.
    41 (engine running) lean right side.
    41(cont. memory) no heated oxygen sensor switch,right side.
    34 egr valve pressure transducer/position sensor sonic voltage above closed limit.
    (tech. manual Haynes #59010)

    Sep 25, 2009 | 1998 Lincoln Town Car

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