Question about 1999 Toyota Camry Solara

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PO135 failed emissions inspection

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That is the code for a o2 sensor is it upper stream or down stream

Posted on Nov 06, 2012

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Having a problem with passing emissions got to do with the fuel injectors or something

Your going to need, the actual exhaust gas readings
from the inspection station,so you have some idea
of the fault your going after ,to correct

Your going to need to road test with a professional scanner,
& look to see of all 8 emission monitors run,if not, no reason
to go to inspection

Your going to have to look at all data & component test things,
to find a problem,so it complies to federal emission regs

If you failed to do regular Preventative Maintenance ,on different
items every year, & just go to inspection,there is a good chance
you will fail

Have to look at those I/M Monitors------ before you go-----

That is all they do at the inspection, unless it is an old veh,then
they do tailpipe exhaust gases, at two different speeds & times frames

Oct 07, 2014 | 2008 Kia Optima

1 Answer

What do all these codes mean PO135-PO300-PO404-PO102-PO440

po135 is o2 sencer on drivers side. will be the first one. po300 is random/multiple misfire.po404 is a egr code. po102 mass air flow circuit low input. po440 evap emission control system malfunction

Dec 23, 2012 | Cars & Trucks

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I have an 02 montana. No check engine light is on but it failed inspection with a code po135. what is the code and what are my solutions?

It's an oxygen sensor issue. Most cars these days have 2 oxygen sensors. 1 "upstream" of converter and 1 downstream. They compare exhaust before and after the converter. When their measurements equal each other, means converter is not functioning (exhaust is same in & out) and not always triggering dash lights. Either you have a bad sensor or your converter is and, is why you didn't pass inspection.

Mar 10, 2011 | 2000 Pontiac Montana

1 Answer

My 2003 Lincoln Aviator emissions light is on and I failed inspection because of it. How can I pass inspection and fix this emissions problem? The inspection code given to me was PO420???

po420 is catalyst system efficiency below threshold. meaning is--- could be down stream 02 sensors or a bad convertor. try buy replacing down stream sensors, hopefully this may help. ( down stream 02 sensors are between convertor and tailpipe). have a good day !!

Dec 13, 2010 | 2003 Lincoln Aviator

2 Answers

What is the air pump for? Sounds like an airplane when I start the vehicle. What I disconnect the pump, what affect will that have on the car's running?

The air pump is an emission control device. It is not going to really affect the running of your car as far as performance; however, if you live in an area where they test for emissions, it could definitely cause you to flunk an emissions test.

Jun 14, 2010 | 1999 Chevrolet Blazer

1 Answer


possible but could be head gasket or valves , or worn rings and is by passing the pistons going straight out the end ...or maby settings are wrong ? try carb cleaner and inspect visually air-filter etc.

Aug 26, 2009 | 1986 Ford Mustang

1 Answer

Error codes PO135, PO449,PO442


P0135 - Heated Oxygen Sensor (HO2S) Heater Performance Bank 1 Sensor 1
P0449 - Evaporative Emission (EVAP) Vent Solenoid Control Circuit
P0442 - Evaporative Emission (EVAP) System Small Leak Detected

Mar 23, 2009 | 2003 Chevrolet Silverado 1500

1 Answer

OBD works with dealer computer, fails with Registry computer

in mass if the tps light is on it will not pass because it is a safety issue.

Jul 01, 2017 | 2004 Volkswagen Touareg

1 Answer

Won't pass due to emissions

O2 senser usually fail.
anything else fail??? did the inspectionstation tell you what need to be done to pass.??
do you have the print out of the inspection????
any machanic should be able to fix what ever the problem is.

Sep 25, 2008 | 1997 Nissan Sentra

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