Question about 2004 Chevrolet TrailBlazer

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2004 6 cyl/4.2 chevy blazer.Emissions code p0410.p0526 can any one help me repair these problems myself? also my idle drops and cuts the engine off when i turn on the interior fan .Any assistance would be greatly appreciated.

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  • Chevrolet Master
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The throttle body needs to be cleaned, grime in this area prevents the throttle plate from closing completely and allowing air to enter, making the air/fuel mixture lean.
Code P0526 is related to the fan clutch, it indicates that the fan speed is not what the PCM commanded. The fan clutch may have to be replaced.

Posted on Oct 10, 2010

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Posted on Jan 02, 2017

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Why does the check engine light keeps coming back on after repairing/replacing secondary air injection system, code P0410?


a lot of times you actually have to drive the vehicle in order for the engine light to reset. sometimes you can have the engine light reset with a scan tool unless a hard-fault code thenone has to do was known as the drive cycle.this could very firm anywheres to 72 150 miles depending on the manufacturer.

May 16, 2014 | 2004 GMC Envoy

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What does Check engine light code P0410 on 2001 Chevy Blazer


has to do with emmision control--air injection system--it doesnt effect the engine but if your state has inspections then u need it fixed

Oct 12, 2011 | 2001 Chevrolet Blazer

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MY 04 CHEVY TRAILBLZER HAS CODES P0526 P0141 P2135 P2138


Four seemingly unrelated fault codes;
P0526 - fan speed error
P0141 - downstream O2 sensor lean condition
P2135 - Throttle position sensor fault
P2138 - Accelerator position fault

You need to have a qualified technician diagnose this with a highend scan tool, maybe there is a possibility that a reference voltage is off spec.

Sep 02, 2011 | 2004 Chevrolet TrailBlazer

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2004 trailblazer, 2 wheel drive. Code P0526, fan clutch circuit. Replaced fan clutch. Still code P0526. Wiring ok. Check Engine Light still on.


A couple of things come to mind. Double check the wiring at the fan clutch, check the whole harness, there is a known problem wth chaffing there. Is it a Dorman brand fan clutch? These have been known to be bad out of the box. The other thing that could be wrong is the actual speed sensor on the new fan clutch. Hope some of this helps.

May 31, 2011 | 2004 Chevrolet TrailBlazer

1 Answer

Engine light code P0410


a po410 code is, Secondary Air Injection System Malfunction.

Jan 30, 2010 | Saturn SL1 Cars & Trucks

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Checked why engine light was on and it gave code P0410 Secondary injection system. to me this is very vague. can you help?


that code indicates a problem w/ the air injection system, a part of the emissions system. you should check the air pump, solenoid, check valves and vacuum hoses of that system. the emissions sticker under the hood should give you a detailed enough diagram of where the components are

Sep 30, 2009 | 2001 Chevrolet Blazer

1 Answer

Mazda rx8 fault code p0410 secondary air system we have a mazda rx8 2006 model, p0410 fualt code has come up, want should we looking to check, test and poss change?


The P0410 code refers to the (secondary air system) emissions system. The AIR pump puts air to the exhaust to lower emissions. It takes in outside air and pumps it through two one-way check valves into each bank of the exhaust.
.
About 90% of the time that this code is set, the one-way check valves have worn out or failed and allow water (which occurs naturally in the exhaust) back into the pump. In any cold climate, especially in climates with higher humidity, this water may be more excessive. The water partially fills the AIR pump, it can then freeze. When the PCM commands the pump on, if the pump is frozen it cannot turn, thus overloading the circuit and "popping" the fuse.

A code P0410 may mean that one or more of the following has happened:
  • Water may have collected in the AIR pump or the vent solenoid and frozen or corroded the pump
  • Blown AIR pump fuse due to freezing up
Possible solution:
This may be covered under the emissions warranty on the vehicle. If your vehicle is out of bumper-to-bumper warranty, check if the emissions warranty is still valid!
  • Replace the AIR pump AND one-way check valve
  • Test and clean the AIR pump AND test and replace the one-way air check valve
  • Replace the AIR pump inlet hose
  • Replace the AIR pump fuse (found under the hood)
It is really only an emissions issue and won't harm your car's engine ot drivetrain. It will however mean you won't pass emission testing if you live somewhere that tests for that like I do!

Jun 03, 2009 | 2004 Mazda RX-8

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