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

emissionwiz
  • 75005 Answers

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

johnjohn2
  • 5763 Answers

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
  • 1144 Answers

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

http://www.obd-codes.com/
go there look up the codes there all there

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

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

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

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.

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

1 Answer

Im trying to pass the smoke check on my 2000 chevy malibu but it has this p0412 code and something with the o2 heater?


its the O2 Sensor, depending on what bank its on, depends what one needs changed.. bank 1 or A is the sensor on the exhaust closes to the engine, and if its bank 2, or B its the sensor on the exhaust closest to the catalatic converter.... or it could say upstream or downstream, the upstream is the one closest to the engine, the downsream is the one by converter. hope this helps

Dec 01, 2010 | 1999 Chevrolet Malibu

2 Answers

Code says evaporator purge solenoid


Which code specifically? Do not assume you need a new solenoid. Our recommendation will depend on the specific code and some troubleshooting results. I usually recommend checking over all the EVAP vacuum lines and the gas cap too whenever there is a purge valve code. Check the vacuum lines at the cannister in the left rear bumper. I will paste info on the purge solenoid below.

P0440 Evaporative emission (EVAP) system - malfunction

Possible causes: Hose connection(s), intake leak, EVAP canister purge valve


P0441 Evaporative emission (EVAP) system - incorrect flow detected

Possible causes: Hose connection(s), intake leak, EVAP canister purge valve


P0442 Evaporative emission (EVAP) system - small leak detected

Possible causes: Hose connection(s), intake leak, EVAP canister, EVAP canister purge valve


P0443 Evaporative emission (EVAP) canister purge valve - circuit malfunction

Possible causes: Wiring, EVAP canister purge valve, ECM


P0444 Evaporative emission (EVAP) canister purge valve -open circuit

Possible causes: Wiring open circuit, EVAP canister purge valve, ECM


P0445 Evaporative emission (EVAP) canister purge valve -short circuit

Possible causes: Wiring short circuit, EVAP canister purge valve, ECM


P0450 Evaporative emission (EVAP) pressure sensor - circuit malfunction

Possible causes: Wiring, EVAP pressure sensor, ECM


P0455 Evaporative emission (EVAP) system - large leak detected

Possible causes: Hose connection(s), intake leak, EVAP canister, EVAP canister purge valve


P0456 Evaporative emission system - very small leak detected

Possible causes: Mechanical fault, hose connection(s), EVAP pressure "sensor


P0457 Evaporative emission system - leak detected (fuel cap loose/off)

Possible causes: Mechanical fault, hose connection(s), EVAP pressure sensor


P0458 Evaporative emission system, purge control valve -circuit low

Possible causes: Wiring short to earth, EVAP valve


P0459 Evaporative emission system, purge control valve -circuit high
Possible causes: Wiring short to positive, EVAP valve


Evaporative Emission Purge Solenoid

Description & Operation
The duty cycle EVAP canister purge solenoid (DCP) regulates the rate of vapor flow from the EVAP canister to the intake manifold. The Powertrain Control Module (PCM) operates the solenoid.
During the cold start warm-up period and the hot start time delay, the PCM does not energize the solenoid. When de-energized, no vapors are purged. The PCM de-energizes the solenoid during open loop operation.
The engine enters closed loop operation after it reaches a specified temperature and the time delay ends. During closed loop operation, the PCM cycles (energizes and de-energizes) the solenoid 5 or 10 times per second, depending upon operating conditions. The PCM varies the vapor flow rate by changing solenoid pulse width. Pulse width is the amount of time that the solenoid is energized. The PCM adjusts solenoid pulse width based on engine operating condition.
Removal & Installation
The duty cycle evaporative (EVAP) canister purge solenoid is located in the engine compartment near the brake master cylinder.

  1. Disconnect electrical connector at solenoid.
  2. Disconnect vacuum lines at solenoid.
  3. Lift solenoid slot from mounting bracket for Removal & Installation.

To Install:
  1. Position solenoid slot to mounting bracket.
  2. Connect vacuum lines to solenoid. Be sure vacuum lines are firmly connected and not leaking or damaged. If leaking, a Diagnostic Trouble Code (DTC) may be set with certain emission packages.
  3. Connect electrical connector to solenoid.
Purge solenoid location:

jturcotte_65.gif
EVAP cannister location:
jturcotte_66.gif

Nov 05, 2010 | 2000 Jeep Grand Cherokee

2 Answers

Check Engine Light


P1133 HO2S Insufficient Switching - Read Our Article On Oxygen Sensor Codes For Help With This Pontiac Trouble Code (check your oxygen sensor also called O2 sensor)

All the codes you have listed come back and refer to the oxygen sensor. I would say that it is your problem. you vehicle may have 2

please do not forget to rate and comment about your experience with fixya
Thank you and happy holidays

Dec 09, 2009 | 2002 Pontiac Firebird

1 Answer

WHAT TO DO ABOUT TROUBLE CODES PO449 & PO141 ON 01 VENTURE


code is P0449

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


A code P0141 may mean that one or more of the following has happened:
  • open or short to ground in the wiring harness
  • O2 heater circuit wiring high resistance
  • O2 heater element resistance is high
  • Internal short or open in the heater element
Note: Typically a failed catalytic converter does not cause this code. You're more likely to see a P0420 code for a failed converter.
Possible Solutions
  • Replace oxygen sensor (cannot repair open or short that occurs internally to sensor)
  • Repair short or open or high resistance in wiring harness or harness connectors

Oct 10, 2009 | 2001 Chevrolet Venture

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