Question about 2001 Fiat Punto

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P0135 error code

Head gasket replaced in summer wont pass emmission for mot comes up with error code 300 which would be missfire from head problem also po135 which must be emmisions.

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P0135 02 sensor heater malfunction,
so you will need to change the 02 sensor.

Posted on Oct 16, 2014

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Posted on Jan 02, 2017

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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

    Heated oxygen sensor heater control circuit low , also see below


    the code is for coolant leak large. Check coolant level and top off.
    check the oil for moisture.
    pull the plugs to see if any are steam cleaned.
    either one could indicate a bad head gasket or worse damaged head.
    Check to see if any new hoses have been added. tighten clamps if needed.
    look on engine block for any puddles where coolant could be leaking.
    pressure test coolant system and check for leaks.
    If you can smell coolant inside the vehicle check the heater core.
    lastly have an emissions test run with the radiator cap off and at running temperature. Start vehicle with cap off to avoid spray of hot coolant. This tests head gasket and cyl head for leaks.

    Mar 11, 2013 | Cars & Trucks

    1 Answer

    Peugeot 206 runs sweet, but high emmisions?


    Even though it runs good, check for intake manifold air leaks. Use an old spray bottle and spray water on the seams and Vacuum lines. The RPM will change when you find the air hole.
    What is happening is the air is creating a lean reading that is within parameters, but not suitable for the testing RPM. Sensing a lean condition, the electronics richen the fuel mix making it too rich. Or a dirty injector may be flooding 1 cylinder.
    There are also additives which are suppose to chemically treat the fuel to knock down the high readings.
    Finally, the testing equipment could be wrong. You are apparently NOT getting a check engine light and unless the O2 sensors are not functioning, the exhaust should indicate something is wrong with the Catalytics. Even if you lose a signal from the O2 sensors you should get a Code for that defect.

    Mar 07, 2012 | 2001 Peugeot 206 1.6

    1 Answer

    Emmissions failed due to the following. OBD Connector Integrity - malfunction indicator light (MIL) status This is for a 2000 chevy lumina


    MIL status is error codes, but usually for pre 1995 vehicles. If you check engine light was on, then it would not pass emmissions. Since your vehicle is a 2000, I would suggest you take it by an autoparts store and have them read your error codes before you try to reset them. Make sure you write them down in the order they come off their scanner.

    Yu can usually clear error codes by disconnecting your battery.

    Jun 27, 2011 | Chevrolet Chevy Cars & Trucks

    3 Answers

    96 dodge ram runs hot.....replaced everything...help!


    Gosh...in this day and age that is not that hot.which is hard to believe. are you experiencing temp gauges in the red or overheating? Im seeing some vehicles blazing at 250- 260 F and still rambling on ...I like the old 180 degree days from the past personally but due to USA emmission laws,some of these engines need to run this hot to pass rigid emmission standards

    Jun 28, 2009 | 1997 Dodge Ram 1500 Club Cab

    3 Answers

    2003 Chevy Silverado 1500 Error Codes


    P0135 is a bad 02 sensor
    P0442 is a evap problem
    P0449 is a vent solenoid

    i would check the vent solenoid first its a 4ws fuse under the hood in the fuse box make sure you have power to it you should have power at all times the ground comes from the pcm i think if you fix this everything else will work they are all computer controled

    Mar 23, 2009 | 2003 Chevrolet Silverado 1500

    1 Answer

    1997 tsi awd wont pass emissions


    Very well could be, if it will not pass due to a trouble code. If it is the actual emmissions that are tested and then failed due to the CO2 emmisions then it could be a myriad of problems.

    Jan 06, 2009 | 1997 Eagle Talon

    1 Answer

    I have a 1997 Jaguar XJ6 Very high emmissions?


    I have an X300 and had very high emmissions at an MOT. Diagnosed by Jaguar as the Lamda (02) sensors. Bought alternatives as Jag wanted a fortune and had them fitted by the Jaguar Main Dealer. Took it for MOT and it still had the same emmissions! MOT chap swapped the leads of the two Lambda sensors over and it was perfect! Still don't know if was the problem or the sensors were faulty.
    So check if either the Lamda sensors are faulty or they are plugged in the wrong way. Try swapping the leads first as it is much cheaper!

    Aug 13, 2008 | 1995 Jaguar XJ6

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