Question about 1999 Chevrolet Malibu

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My 1999 chevy malibu has p1404 & p1133 codes

3.1 engine I already change the upstream O2 sensor and the evap purge solenoid then I cleared the codes and the codes came back

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  • Chevrolet Master
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P1133 HO2S Insufficient Switching Sensor 1
P1404 IAT - B Circuit Malfunction/ Exhaust Gas Recirculation Closed Position Performance
_____________
supervag k can

Posted on Dec 08, 2012

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Posted on Jan 02, 2017

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emissionwiz
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SOURCE: Where is my upstream O2 sensor on 2006 Monte Carlo?

It is the one that is before the catalytic converter

Posted on Nov 02, 2012

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SOURCE: Chevy Impala 2001 w/ 3.8L engine - EGR stuck open

there are a couple of things, first make sure there are not restriction in the exhaust, i know the dealer has had to replace converters under warranty because of this problem, then theres a reflesh program for the computer due to this problem, and lastly,run with egr off make sure it clean of carbon,carbon gets stuck in pintle sets check eng lightbut carbon then blows by so when you remove egr you see nothing, well start with these good luck.

Posted on Nov 28, 2009

  • 113 Answers

SOURCE: 96 cavalier obd codes p0171 p0131 p1133 replaced

if you replaced the sensors, you have to clear the codes with a obd2 scantool, otherwise its still gonna show a fault.

Posted on Jul 21, 2009

pumpkinman
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SOURCE: 98 chevy s-10 codes p0131, p0171, and p1133

http://www.obd-codes.com/
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Posted on Sep 24, 2009

  • 1114 Answers

SOURCE: O2 sensor and evap solenoid

Hello you must disconect battery while replaceing this parts.This is a saftey messure also it alows the computer to reboot once conected and will reset the engine light and put it out for you.If you did not disconect the battery chances are you will still have service engine light on.Disconect your battery wait a couple of minutes reconect that should do it for you .Hope my support helped you.regee

Posted on Dec 25, 2009

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2 Answers

What will cause a p0440 code to appear on 2000 chevy silverado?


What engine does it have ?
Engine Controls - 4.3L
Engine Controls - 4.8L, 5.3L, and 6.0L
DTC P0440 Evaporative Emission (EVAP) System
Circuit Description
The evaporative system includes the following components:
• The fuel tank
• The evaporative emission (EVAP) vent solenoid
• The fuel tank pressure sensor
• The fuel pipes and hoses
• The vapor lines
• The fuel cap
• The evaporative emission canister
• The purge lines
• The EVAP purge solenoid
The evaporative leak detection diagnostic strategy is based on applying a vacuum to the EVAP system and monitoring the vacuum decay rate. The vehicle control module (VCM) monitors the vacuum level via the fuel tank pressure sensor input. At an appropriate time, the EVAP purge solenoid and the EVAP vent solenoid turn ON, allowing the engine vacuum to draw a small vacuum on the entire evaporative emission system. If a sufficient vacuum level cannot be achieved, a large leak or a malfunctioning EVAP purge solenoid is indicated. The following conditions can cause this problem:
• A disconnected or malfunctioning fuel tank pressure sensor
• A missing, malfunctioning, improperly installed, or loose fuel cap
• A disconnected, damaged, pinched, or blocked EVAP purge line
• A disconnected or damaged EVAP vent hose
• A disconnected, damaged, pinched, or blocked fuel tank vapor line
• A disconnected or malfunctioning EVAP purge solenoid
• A disconnected or malfunctioning EVAP vent solenoid
• An open ignition feed circuit to the EVAP vent or purge solenoid
• A damaged EVAP canister
• A leaking fuel sender assembly O-ring
• A leaking fuel tank or fuel filler neck
Any of the above conditions can set a DTC P0440.

Apr 27, 2018 | Cars & Trucks

2 Answers

Code p1133 for a 2005 chevy trailblazer ls/ oxygen sensor where is the sensor located?


On most vehicles, the sensors are screwed in to the exhaust pipes or exhaust manifolds, usually under the car/truck , in the vicinity of "under the front seat" area. They are usually the size of your thumb, and have a wire going to them.

Dec 10, 2015 | Cars & Trucks

1 Answer

2004 Chevrolet Colorado 2.8L I4 P1133 NIGHTMARE.. Changed Front o2 sensor code still comes back, Help? Autel Scanner Shows EVAP and Cat monitors with X with P1133 DTC and pending


DTC P1133
The PCM detects that the HO2S 1 rich-to-lean counts, or the lean-to-rich counts is less than a calibrated value.
Test the HO2S 1 high signal circuit for a short to the HO2S 1 low signal circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
--
Go to Step 14
Go to Step 11

7

Test the HO2S 1 high signal circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Test for shorted terminals and for poor connections at the powertrain control module (PCM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems

Jul 12, 2015 | Chevrolet Cars & Trucks

1 Answer

Po421


po421 catalytic converter code [warm up catalyst efficiency below threshold bank 1] means the o2 sensor is detecting low oxygen in exhaust problem can be cat conv going bad---o2 sensor faulty-and or bad spark plug ....as to the p0441 evap system[-evap emissions control system incorrect purge flow ] this is a system code meaning any part of the evap can have problem will need to check the fuel lines vapor lines for damage or breaks-check purge valve -purge valve solenoid- canister- and vacuum lines

Apr 10, 2013 | 2003 Mitsubishi Lancer

1 Answer

I have a code P0449 on my 1999 chevy malibu 3.1


check engine light ison,autozone says code is P0449 this is whattheir ticket says:

The PCM has determined that a malfunction exists in the electrical circuit for the vent valve/solenoid in the evaporative emission control system.

Definition:
EVAP (Evaporative Emission System) purge/vent solenoid circuit condition

Explanation:
The solenoids and system wiring are monitored for opens or shorts

Probable Causes
1- Purge or vent solenoids defective
2- Check connevtor and wiring
3- Fuel saturated vapor canister
4- Failed EVAP vent solenoid

Dec 06, 2012 | 1999 Chevrolet Malibu

1 Answer

Have had check engine light on over a year first code p0442 changed gas cap' purge soleniod,charcoal canisterdidnt work changed leak detection pump now codes p0440 and p0499 are coming up any idea


you can look this obd2 trouble code table.
for p0440, you can try this:

Remove and reinstall the gas cap, clear the code, and drive for a day and see if the codes come back.

Inspect the EVAP system for cuts/holes in tubes/hoses

Inspect for damaged or disconnected hoses around the Evap purge solenoid

Check and/or replace the sensor

Check and/or replace the purge valve

Have a professional use a smoke machine to detect leaks

Aug 04, 2011 | Dodge Dakota Cars & Trucks

1 Answer

I have a 1997 infiniti i30 with engine codes p0600,p0440,p0446,p0720, im trying to find out what the parts are for each code and where the part is located on the vehicle.


this is an obd2 trouble code table, it can help you understand the meaning of code.

for the p0440, you can try this:
Remove and reinstall the gas cap, clear the code, and drive for a day and see if the codes come back.
Inspect the EVAP system for cuts/holes in tubes/hoses
Inspect for damaged or disconnected hoses around the Evap purge solenoid
Check and/or replace the sensor
Check and/or replace the purge valve
Have a professional use a smoke machine to detect leaks

for p0446, you can try this:
Remove and reinstall the gas cap, clear the code, and drive for a day and see if the codes come back.
Inspect the EVAP system for cuts/holes in tubes/hoses
Inspect for damaged or disconnected hoses around the Evap purge solenoid
Check and/or replace the sensor
Check and/or replace the purge valve
Have a professional use a smoke machine to detect leaks

Jul 26, 2011 | Infiniti I35 Cars & Trucks

1 Answer

I recently purchased this 1999 Chevy Blazer and it wont pass inspection because the OBD2 Diagnostic trouble code states it's problem is, code P0440-Evaporative Emission System. The guy said it looks like...


The evaporative leak detection diagnostic strategy is based on applying a vacuum to the EVAP system and monitoring the vacuum decay rate. The VCM monitors the vacuum level via the fuel tank pressure sensor input. At an appropriate time, the EVAP purge solenoid and the EVAP vent solenoid turn ON, allowing the engine vacuum to draw a small vacuum on the entire evaporative emission system. If a sufficient vacuum level cannot be achieved, a large leak or an EVAP system malfunction is indicated.

The following conditions can cause this problem:
* A disconnected or malfunctioning fuel tank pressure sensor
* A missing, malfunctioning, improperly installed, or loose fuel cap
* A disconnected, damaged, pinched, or blocked EVAP purge line
* A disconnected or damaged EVAP vent hose
* A disconnected, damaged, pinched, or blocked fuel tank vapor line
* A disconnected or malfunctioning EVAP purge solenoid
* A disconnected or malfunctioning EVAP vent solenoid
* An open ignition feed circuit to the EVAP vent or purge solenoid
* A damaged EVAP canister
* A leaking fuel sender assembly O-ring
* A leaking fuel tank or fuel filler neck

Any of the above conditions can set a DTC P0440.

I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

Mar 08, 2011 | 1999 Chevrolet Blazer

2 Answers

Hi, I have a 1999 Saturn SC2 and my service engine light came on. I did a diagnostic on it and the code showed P1133. The guy at the auto shop told me it's an oxygen sensor, but didn't know if it was the...


First, I wouldn't let that guy work on your car. P1133 is "O2 Sensor Slow Response - Sensor 1" Anybody that has been in the auto repair business for more than a week should know that Sensor 1 is ALLWAYS the FRONT sensor.

Note: O2 sensor codes do not necessarily mean that an O2 sensor needs to be replaced. Most O2 Sensor codes are caused by something other than the O2 Sensor itself. (there are several different possible O2 Sensor codes for your car. P0131, P0132, P0133, P0134, P0138, P0171, P0172, P1133, P1134)

The most likely cause of DTC (Diagnostic TroubleCode) P1133 is contamination of the O2 Sensor. Replacing a contaminated O2 Sensor without repairing the source of the contamination will only result in a repeat repair. It could be caused by bad fuel, improper use of RTV sealant, engine oil or engine coolant. I have seen this caused many times by engine oil leaks that run down the exhaust and clog the holes in the side of the sensor shield. (The sensor must "breathe" to work properly)

Then on the other hand, if your vehicle has a lot of miles on it, the sensor could be just chemically worn out. In any case, the FRONT sensor is the one that is setting the code.

Jan 05, 2011 | 1999 Saturn SC

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