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2001 chevrolet blazer

Secondary immobliser fault

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I replaced my secondary air check valve on my 2001 chevy tahoe but code 1416 still comes up. what else can i check


here is what i found on p1416.



P1416 Chevrolet
P1416 Chevrolet - Secondary Air Injection System Bank 2
Possible causes
- Faulty Secondary Air Injection (AIR) pump
- Secondary Air Injection check valve bank 2
- Secondary Air Injection (AIR) pump electrical circuit fault
- Blocked Secondary Air Injection (AIR) system

When is the code detected?

The P1416 code is set when no O2 sensor voltage change is detected by the Engine Control Module (ECM).


Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)


P1416 Chevrolet Description
An Secondary Air Injection (AIR) pump is used on this vehicle to lower tail pipe emissions on start-up. The PCM supplies a ground to the AIR pump relay, which energizes the AIR pump. The Powertrain Control Module (PCM) monitors the HO2S voltages to diagnose the AIR system. During the AIR test the PCM activates the AIR pump during closed loop operation. When the AIR is activated, the PCM monitors the HO2S voltages and short term fuel trim values for both banks of the engine. If the AIR system is operating properly, the HO2S voltages should go low and the short term fuel trim should go high.

Jan 23, 2014 | 2001 Chevrolet Tahoe

1 Answer

On my 2001 Chev Blazer 4.3 the secondary pump is new and comes on on cold start I'm still getting a p0410 code what could be causing this


check pump new doesnt mean free from defects also check the check valve can be damaged and lastly the fuse may be blown

Mar 31, 2013 | Chevrolet Blazer Cars & Trucks

1 Answer

Where is the secondary air system one way check valve located on a 2001 chervolet s-10 sr blazer


If you follow the hose from the pump it should go to a valve and tube that connects to the exhaust.
Depending on the trouble code, you may need the check valve on the end of that tube.

Sep 14, 2012 | 2001 Chevrolet Blazer

1 Answer

On a 2001 chevy s1o blazer,4.3 engine, what is the secondary air injection system, what does it do, and where is it located


it injects air into the exhaust to reduce emissions, burn off carbon monoxide and hydrocarbons. it is a system of tubes and pump, best bet is diagrams, which i cant post here, so suggest chilton or hayes repair manual $30 at auto stores with trouble shooting, diagrams, and directions.

Jun 09, 2012 | 2001 Chevrolet Blazer

2 Answers

What does this code mean? P0410


Diagnostic Test Code (DTC) P0410 indicates that your secondary air injection system is not functioning properly.
Not all 2001 Chevrolet Bazers are equipped with secondary air injection. The secondary air injection system was added to vehicles that were to be sold in certain areas where the emissions laws required it, like the State Of California.

The Powertrain Control Module (PCM) monitors the system by commanding the secondary air blower motor to run and the air injection solenoid to open. This causes additional oxygen to enter the exhaust system. The PCM then monitors the signal from the oxygen sensors to see if the commanded air has in fact, entered the exhaust system. Code P0410 sets when the PCM has commanded the blower motor on and the solenoid open and there is little or no change in the oxygen sensor signal.

GM has had some problems with these systems and there has been a Technical Service Bulletin (TSB) issued that addresses some of the known concers. Below is a brief description of the TSB and the issues involved.

Bulletin No.: 04-06-04-015A
Date: November 28, 2006
TECHNICAL
Subject:
LN2, L43 or L35 Engine SES/MIL Light Illuminated, AIR Pump Ingesting Water and DTC P0410 Set (Replace AIR Pump and Inlet Hose Assembly)
Models:
1999-2003 Chevrolet Blazer, S10
1999-2001 GMC Jimmy
1999-2003 GMC Sonoma
1999-2001 Oldsmobile Bravada
with Vortec 2.2L I4 or 4.3L V6 Engine (VINs 4, 5, W - RPOs LN2, L43, L35)
Condition
Some customers may comment on the SES/MIL light being illuminated. Upon investigation, the technician may find a DTC P0410 indicating that there is a concern in the secondary air injection system.
Cause
Water may have collected in the AIR pump or the vent solenoid and frozen or corroded the pump.
Correction
Replace the AIR pump and install a new inlet hose and solenoid tube assembly...

The bulletin goes on and gives detailed information on how to perform the repair and the part numbers of the replacement parts needed to do so. Your local dealer can provide the parts for you and you can probably get them to print out a complete copy of the bulletin for you. It is not really hard to do if you want to do this yourself.

Sep 01, 2011 | 2001 Chevrolet Blazer

1 Answer

2001 ZR-2 BLAZER HAS 4.3 V6 KEEPS GIVING P 0410 trouble code = secondary air injection system. What is this fault code saying and what is the fix?


your vehicle has an air pump that puts air in to the exhaust cooling it to reduce nox gasses most likely the pump has sucked up water shorting it out and blowing the fuse. there is an updated pump inlet and pump to fix this problem also need to replace the fuse after replacing pump.

Dec 16, 2010 | 2001 Chevrolet Blazer

1 Answer

What is the secondary air injection? were is it located? is there a common fix?


Secondary air injection is a pump under the front of your vehilce on the passenger side up behind the bumper can be accessed from the under side by removing the front cover,most times I have seen pipes coming off and filling with water.

Dec 21, 2009 | 2001 Chevrolet Blazer

1 Answer

2001 chevrolet blazer 4 wheel drive light flashing?


Hello. this means there is a electronic fault in the transfer case or control module. you will need to have the system scanned for trouble codes to have some idea what the fault is

Nov 01, 2009 | 2001 Chevrolet Blazer

1 Answer

Secondary air injection pump location 2001 chevy blazer


under the radiator on the passenger side of the truck. There is a little splash guard you will need to remove to see it, The guard is held in with 4 15mm headed bolts, then you will be able to see the bottom of the air pump.

Oct 26, 2009 | 2001 Chevrolet Blazer

1 Answer

Wont start


If your car sounds like it is trying to start but will not turn over replace the rotor button and the distributor cap.

lovelylavon88@yahoo.com

May 24, 2008 | 2001 Chevrolet Blazer

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