Question about 2005 Dodge Ram 1500

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I change my oxygen sensor yesterday and now is bad again engine light came on again they change the oxygen sensor again but the mechanic thinks something else might be going on but they not sure

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Your vehicle’s computer system has self-testing capability. When the computer senses that there is a problem with one of the components or sensors it stores the correspondent trouble code(s) in its memory and lights up the "Check Engine" or "Service Engine Soon" light to tell you that there is a problem and you need to diagnosed and repaired it. The list of possible codes number in the hundreds. What codes were found to tell you the O2 sensor was bad? Remember there are more than one on your truck. If the underlying problem is not addressed the light will come back on. Excessive oil or engine coolant getting on the sensor can make it fail.

Posted on Mar 05, 2009

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Toyota Vitz 2007, 1.0 L, check engine light comes on at 100 km/h and goes off after turning off engine but comes back again at high acceleration like 100 km/h. change oxygen sensor as well.


That code is actually due to the fuel pressure being too low and causing a lean condition that the oxygen sensor picks up. It is common in that vehicle. Check the fuel pump pressure, filters etc.

Feb 08, 2017 | Toyota Cars & Trucks

1 Answer

My Dodge Stratus (1998 4 cyl) check Engine light is on. The error code says oxygen sensors were bad. Both oxygen sensors have been replaced. After resetting the check Eng light. The oxygen sensor


the upper 02 sensor is for air fuel mix while the secondary 02 sensor is for the operation and status of the catalitic converter are you sure the catalitic converter is not plugged. Could be if you have had a loss of power

Sep 16, 2014 | 1998 Dodge Stratus

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Just after getting an oil change yesterday my van started to ride VERY rough. It had problems with acceleration. This morning the service engine soon light came on. I took it back to the place who did the...


It sounds like your oxygen sensor is bad. Try unplugging it and see if the engine runs better. If it does then replace the sensor. This would be the oxygen sensor after the engine before the cat.

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I just changed my brakes yesterday and everything was fine, but today i drove the car for 80 miles and the abs lights came on.


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Jun 13, 2011 | Volvo S60 Cars & Trucks

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Check engine light on, replaced oxygen sensor before catalyst,


  • Water or corrosion in the connector
  • Loose terminals in the connector
  • Wiring burnt on exhaust components
  • Open or short in the wiring due to rubbing on engine components
  • Holes in exhaust allowing unmetered oxygen into exhaust system
  • Unmetered vacuum leak at the engine
  • Bad o2 sensor
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Jun 18, 2010 | 1999 Lexus RX 300

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1998 Saturn SL2 engine light


Possible Causes
The following are malfunctions that could cause a rich condition:
^ Fuel pressure too high. Perform fuel pressure test.
^ Leaking fuel injector(s). - Perform pressure leak down test.
^ Vacuum leak around the MAP sensor grommet.
^ Oxygen sensor contamination.
^ Restricted exhaust or air intake.
^ Fuel Vapor Canister saturated with fuel.

IMPORTANT:
If the front oxygen reading voltage is above 600 mV and the rear HO2S is above 600 mV all the time, the O2 sensors are probably not
at fault.

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1 Answer

O2 Sensors


Autozone oxygen sensors do not function properly in Toyota vehicles. Just had a Tacoma yesterday with the same issue. New sensors, runs poor, check engine light on. Toyota sensors fixed it right now.

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1 Answer

2000 dodge intrepid 3.2 engine light on yesterday, code PO432, should I replace the upper oxygen sensor?


this is the code for catalytic convertor efficiency. if you decide to change the 02 sensor change both of the sensors for the left head...there is a good chance the convertor is going bad also depending on the miles

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