Question about 2002 Toyota Highlander

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2002 Toyota Highlander P0161, PO420 and PO421

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 120 Answers

SOURCE: 2002 toyota rav 4 / code po420 whats wrong ?

You have a cat converter ie eficiency code. Most shops are willing to sell you a cat converter and make a quick buck. However you can save some major money if you can find out what is wrong. A cat converter doesn't just go bad by itself something causes it to fail. Most likely a bad oxygen sensor or a dirty mass air flow sensor. I would replace the oxygen sensor in front before I replace converter. Reset check engine light and see if light comes back on. If it stays off you just save about 600 dollars. Oxygen sensors cause cat converters to go bad. So fix the cause first, then if you have to replace converter.

Posted on Oct 28, 2010

  • 9 Answers

SOURCE: I have a toyota highlander (2002). It came with

Open the remotes up...Are the boards the same...?

Posted on Jun 12, 2009

  • 185 Answers

SOURCE: 2002 Toyota highlander passenger brake light not working

the brake light has its own bulb. you have to remove the tail lamp fromthe vehicle to replace the bulb. it is a double filiment bulb. make sure you replace it with the correct bulb or the warning lamp will stay on.

Posted on Oct 06, 2009

bschilz
  • 2049 Answers

SOURCE: how to repair po420 code on a 2002 toyota sienna

The P0420 code is Catalyst System Efficiency Below Threshold (Bank 1) error.
A code P0420 may mean that one or more of the following has happened:

  • Leaded fuel was used where unleaded was called for
  • An oxygen sensor is not reading (functioning) properly
  • The engine coolant temperature sensor is not working properly
  • Damaged or leaking exhaust manifold / catalytic converter / exhaust pipe
  • Retarded spark timing
  • The oxygen sensors in front and behind the converter are reporting too similar of readings
Some suggested steps for troubleshooting a P0420 code include:
  • Check for exhaust leaks at the manifold, pipes, catalytic converter. Repair as required.
  • Use a scope to diagnose the oxygen sensor operation (Tip: The oxygen sensor in front of the catalytic converter normally has a fluctuating waveform. The waveform of the sensor behind the converter should be more steady).
  • Inspect the downstream heated oxygen sensor (HO2), replace if necessary
  • Replace the catalytic converter
One thing to note is that many vehicle manufacturers
offer a longer warranty on emissions-related parts. So if you have a newer car but it's out of it's bumper-to-bumper warranty, there still may be warranty on this type of problem. Many manufacturers give a five year, unlimited mileage warranty on these items. It's worth checking into.


Posted on Oct 26, 2009

BuzzFlewhart
  • 655 Answers

SOURCE: Highlander Tail Light

Could be the seal around the taillight assembly is leaking water onto the bulbs. I had a similar problem and resealed the plastic lens cover and that was that.... no more burned out bulbs.

Posted on Dec 16, 2009

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Pesky PO420 Codes - Eastern Catalytic

www.easterncatalytic.com/education/tech-tips/pesky-p0420-codes/
One of the most annoying is the persistent PO420 diagnostic code (Catalyst System ... not only shows its teeth when the catalytic converter is on the blink, but can also be ... Most, if not all, catalytic converter failures are caused by a problem or ...

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1 Answer

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Visit the on-line store, know as reliable-store, they have the repair manuals. I'm sure you will get the solution of your problem.
TOYOTA HIGHLANDER 2001 2002 2003 2004 2005 2006 2007 SERVICE REPAIR MANUAL

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I need help to confirm location of sensor 2 bank 2. CEL detect P0161. There are 4 sensors in which two are above the catalyc converter and two are below the converter. The part department staff says the...


that Toyota has a 2.4 l 2az-fe 14of 155 hp and ran from 2001-2007 after which a v6 engine was installed
the sensor is the one before the cat converter as it is a heated oxygen sensor (KO2S) and reports on the gas composition to the ECM for air/fuel ratio adjustments
the oxygen sensor (O2) is after the cat converter and reports on the cat operation
have the cat converter checked at an accredited muffler shop

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OBD2 CODE p0161


For location of o2 sensor bank 2 sensor 2, on toyota 2002 rav4, click the link below:---

http://alltypesofpartsreplacing.blogspot.in/2012/12/obd-code-p0161.html

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These will help.

Thanks.

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1 Answer

Highlander Tail Light


Could be the seal around the taillight assembly is leaking water onto the bulbs. I had a similar problem and resealed the plastic lens cover and that was that.... no more burned out bulbs.

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1 Answer

I have a toyota highlander (2002). It came with


Open the remotes up...Are the boards the same...?

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