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2006 trailblazer po 411 code check engine light comes on and off over time is it a sensor or the air pump?

2006 trailblazer po 411 code check engine light comes on and off over time is it a sensor or the air pump?

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Check all your vacume lines one may have a crack in it

Posted on Apr 21, 2009

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Where is low idle sensor on 2006 chevy trailblazer six cyl it idles low and was told to clean sensor


Just my opinion, I'd check for applicable trouble codes, first. Some of the national brand auto stores will check codes for free. If you want to check codes, yourself, at the least, you need an obd2 code reader that will check po codes as well as manufacturer specific codes. See if anything points to tac/throttle actuator control?
There are also accelerator pedal position sensors that you need to check. If you want to clean throttle body, that's fine.

Dec 07, 2016 | 2006 Chevrolet Trailblazer

3 Answers

PO-139 I had that sensor change 3 weeks ago and the check engine light came on again this morning.Thanks


Probably replaced a good sensor. This codes could be from a bad sensor, a vacuum leak, or an exhaust leak before the sensor.

Dec 01, 2015 | 2006 Hyundai Tucson

1 Answer

When smog check was done it read two codes po 411 and po 420


the first code is to do with the secondary air injection optical sensor not reading correctly and i suspect it's that causing the second code which is catalytic convertor reading out of range , so get the optical sensor sorted , may be the ECU or PCM wiring or the sensor itself

Jul 04, 2014 | Volkswagen Passat Cars & Trucks

1 Answer

Dealer says code P0506 for my check engine light and that it is caused by air pump emmisions


Just my opinion, but dealer is blowing smoke up there! Clean your throttle body. This is idler control code. It is VERY common for our TB's throttle body to gum up and get clogged with carbon, because we don't have a pcv system. Disconnect the battery, clean the throttle body, best done if you remove the throttle body. You can even re-use the plastic o-ring/gasket many times over. I find that using Seafoam to clean with plastic bristled brush is the best. Seafoam is sensor safe and cost about $9 a can. Look up on the TUBE, there are many videos there showing how to clean a Trailblazer/Envoy throttle body. Very easy and inexpensive. After that's done, clean that throttle body at least once a year. You'll get better gas mileage with it clean.

Jan 25, 2014 | 2006 Chevrolet Trailblazer

1 Answer

I have a 2007 Chevrolet Trailblazer we have replace the secondary air injection pump and relay and the check engine light is still on. We have cleared the computer but comes back on after next start up....


P2432 secondary air injector system pressure Sensor circuit low. Have you check the air control solenoid valve itself? Also look for obstruction. It is listed as number 1 in the fiqure.10_2_2011_3_30_28_am.gif

Oct 01, 2011 | 2004 Chevrolet TrailBlazer

1 Answer

How to fix po 411 promblem on a 1998 ford taurus


CODE PO411 - SECONDARY AIR SYSTEM INCORRECT UPSTREAM FLOW DETECTED. POSSIBLE CAUSES, AIR PUMP OUTPUT IS BLOCKED, AIR BYPASS SOLENOID LEAKING OR BLOCKED, AIR BYPASS SOLENOID IS STUCK OPEN OR STUCK CLOSED. AIR INJECTION PUMP HOSES LEAKING, PCM HAS FAILED.

Jun 08, 2011 | 1998 Ford Taurus

1 Answer

While driving my 2006 trailblazer ss a engine sign came on with a arrown inside pointing down. which cause my vehicle not to accelerate only up to 40 . what has happen?


You will need to have the computer scanned for codes, whenever the engine light comes on the computer stores codes that will tell you where the problem is, for example the speed sensor may be bad and if thats the case the code would be a po***** speed sensor, hope this helps.

Dec 19, 2010 | Chevrolet TrailBlazer Cars & Trucks

1 Answer

Chevy trailblazer check engine light


P0128 is coolant operating temperature operating too low. This can be contributed to the Thermostat stuck open or faulty electronic radiator fan clutch. This is common, I had the same issue and replaced the thermostat and fan clutch and had the clutch re-programmed (required) at the dealer. As for the P0410, check the air pump fuse, if blown it will set this code on. Also check the air pump hoses for water and cracks. Hopefully this helps!!

Apr 20, 2010 | 2004 Chevrolet TrailBlazer

1 Answer

My escort is rpm over 3k when it starts and check engine light comes on. i get codes 116, 412, and 411..what can i do?


Code 116- Engine coolant temperature (ECT) sensor out of range, I would replace it.

Code 411- Idle speed system not controlling idle properly (too High)
Code 412- Idle speed system not cotrolling idle properly (too Low)

After replacing the ECT clear codes by disconnecting battery positive for at least ten seconds, see if codes 411, 412 return, if so clean or replace the Idle Air Control solenoid (IAC), repeat clearing of codes. Hope this helps, let me know.

Feb 18, 2010 | 1995 Ford Escort

2 Answers

Check engine light comes on and the vehicle starts running rough, misfiring and will stall at times. The codes have been cleared twice and it will go for 75 miles before it happens again. Stored codes are...


okay lets start with the po 068 & po 108, check the connection to the mass air flow sensor if conn are good replace the mass air flow sensor, that should solve the two codes, now the po455 is a evap gross leak detected. first is to make sure gas cap is good and on tight, i f it is then look for broken evap lines or hoses, it a line that sends vaccum to evap canister and another line that send fuel vapors to engine and canister check lines, also there are valve that you should check vent and purge valves, this part you may need a shop to test valves, hope this is helpful,

Dec 24, 2009 | 2006 Volkswagen New Beetle

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