Question about 1999 Chevrolet Blazer

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Have two codes on 1999 chevy blazer


code p0404 exhaust gas circuit a and p0101 mass air circuit a problem. what is circuit a

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  • Bruce Bracey
    Bruce Bracey May 11, 2010

    Not sure if you finished.

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  • Chevrolet Master
  • 3,640 Answers

P0404 is egr flow range, remove and clean egr passage way, it maybe built up with carbon, p0101 remove and clean mass air flow sensor. you can buy the cleaner at any auto parts store. but be carefull of the inside of sensor, follow directions on can. this should help a lot!!

Posted on Aug 22, 2010

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When your catalytic converter is pluged, it will not let enough air pass threw maf causing that code. Also the back pressure will cause the egr to open when it's not supposed to causing that code. If you are lacking power pull out o2 sensor and take for a ride. Should notice increase in power. Change cat conver and u ready to go.

Posted on Jun 29, 2012

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2 Answers

How to work on code p0101


Definition of Diagnostic Trouble Code P0101 Category: Powertrain Definition: Mass or Volume Air Flow "A" Circuit Range/PerformanceNote: This definition of P0101 is applied to all manufacturers

Jul 05, 2015 | Cars & Trucks

2 Answers

My 2006 chevy malibu doesn't want to shift gears codes P0121 & P0101 & P0420 transmission place said it's not the transmission.


P0101....Mass or Volume Air Flow Circuit Range/Performance Problem
P0121 - Throttle Position Sensor/Switch A Circuit Range/Performance Problem.
P0420 - Catalyst System Low Efficiency
there is criteria that enable trans shift
solve codes problems then transmission will shift normaly

Dec 14, 2014 | 2006 Chevrolet Malibu

2 Answers

What is the code p0473 for a dodge sprinter van 2008


Error Code: P0404
Fault Location:
Exhaust Gas Recirculation (EGR) System - Range/Performance Problem
Causes:
-Hose leak/blockage.
-Wiring harness.
-Exhaust gas recirculation (EGR) valve/solenoid.
Error Code: P0473
Discription:
Exhaust Gas Pressure Sensor - High Input
Causes:
- Wiring short to positive.
- Exhaust gas pressure sensor (G450).
- Engine control module (ECM).
Error Code: P0674
Description:
Glow Plug Cylinder 4 Circuit - Circuit Malfunction
Causes:
-No Pre-Glow Period.
-Poor Cold Starting.
-Glow Plug Wiring faulty.
-Poor connection.
-Relay.
-Glow plug control module.
-Glow Plug faulty.
-Engine control module (ECM).
Solutions:
Check Glow Plug Wiring.
Check Glow Plug.
Error Code: P0675
Description:
Glow Plug Cylinder 5 Circuit - Circuit Malfunction
Causes:
-No Pre-Glow Period.
-Poor Cold Starting.
-Glow Plug Wiring faulty.
-Poor connection.
-Relay.
-Glow plug control module.
-Glow Plug faulty.
-Engine control module (ECM).
Solutions:
-Check Glow Plug Wiring.
-Check Glow Plug.

Sep 20, 2014 | 2008 Dodge Sprinter

1 Answer

Error code p0101 & P0404


P0101 - Air flow meter

P0404 - EGR valve?

Nov 23, 2013 | 2001 Volkswagen Jetta TDI

1 Answer

ISUZU TROOPER 3.2 V6 CODE P0101


P0101 ISUZU - Mass Air Flow Circuit Performancexicon.jpghttp://engine-codes.com/p0101_isuzu.htmlForum CodePossible causes- Dirty mass air flow sensor
- Dirty mass air filter
- Mass air flow sensor harness is open or shorted
- Mass air flow sensor electrical circuit poor connection
- Intake air leaks
- Faulty mass air flow sensor
Tech notes Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with low compress air or mass air flow sensor cleaner. Reset code and drive vehicle. If the code comes back, it may be necessary to replaced the mass air flow sensor

Jul 04, 2012 | 2001 Isuzu Trooper

1 Answer

P0101


P0101: MAF or VAF A Circuit Range/Perf

- Dirty mass air flow sensor
- Dirty mass air filter
- Mass air flow sensor harness is open or shorted
- Mass air flow sensor electrical circuit poor connection
- Intake air leaks
- Faulty mass air flow sensor

Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with low compress air or mass air flow sensor cleaner. Reset code and drive vehicle. If the code comes back, it may be necessary to replaced the mass air flow sensor.

Feb 09, 2012 | 1999 Pontiac Grand Prix

2 Answers

What are codes p0101 & p1153


  • P0101 - Mass Air Flow (MAF) Sensor Performance
  • P1153 - Heated Oxygen Sensor (HO2S) Insufficient Switching Bank 2 Sensor 1
  • Mar 20, 2011 | 2003 Chevrolet S-10

    1 Answer

    These show up on computer p0101 maf sensor p0128 thermostat p0155 02s heater circuit im not getting power i need to now all the problems & solutions i have 85700 miles 2002 chevy blazer is this...


    Ok, it's not the transmission.
    P0101 maf sensor ( mass air flow) sensor. Change the sensor, it is located in the air intake hose that runs from the air filter housing to the throttle plate/ throttle body. Disconnect the wire from it and loosen clamps ( if equipped) and pull hose from it.
    P0128 thermostat is below temperature specs, change to a 190 or 195 degree thermostat. auto parts store should be able to tell you which one you need.
    P0155 the heater circuit in the oxygen sensor is bad, need new one. That is on bank 2 sensor #1. If it is a V6, looking at the engine, it would be on passenger side, screwed into the exhaust pipe near the exhaust manfold.

    Sep 22, 2010 | 2002 Chevrolet Blazer

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