Question about 2002 Oldsmobile Bravada

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02 Bravada Engine Light On

Took to autozone and the error code was 1481 and 1484. Said it was somw type of emission problem. Not running rough or anything light is just on. Replaced cooling fan about 2 months ago.

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Goto the following link. Hope it will be of some help for you.

Posted on Oct 07, 2008


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I took my car to jiffy lube, 2004 dogde stratus, 2.4 l , to get my 02 sensor replaced. Now my ingine light is on the code was PO420. I wonder now if he kept my new sensor and never replaced it with the new...

Alot of times an in effective catalyst code and an O2 sensor code can be set from an engine vacuum leak. Engine sensors can not see a vacuum leak, but they can tell when an engine is running lean and associate it with the emission system. My suggestion is to have your mechanic look for a bad vacuum hose or elbow.

Nov 14, 2014 | Cars & Trucks

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Van starts hard, then runs fine, fan is loud, service engine liht on

This is all tied to the service engine soon light.

When the Check Engine light (or Service Engine Soon or small picture of an engine) is turned on, the systems computer control unit (called the PCM) has sensed a fault in the electronic controls of the engine and/or the emission system. When this happens you will seldom feel the car engine run any different. There are about 200 possible system faults (the gas cap is just one of them) that turn the Check Engine light on, to know what has developed a problem you must have the system tested, this is called an OBD2 fault code test, Kragen/Oriley and Autozone parts stores (USA only) do this testing for free.

Jan 29, 2012 | 1999 Dodge Caravan

1 Answer

Check engine light on, vibration at idle

Generally, the problem is in the emissions or something that is affecting the effectiveness of the emissions, but other causes can trigger the light to come on, too. To determine the cause, the vehicle will need to be taken to AutoZone or a shop that has an OBD2 scanner, or for 1995 and earlier models, an OBD1 scanner, While a scanner will not give you the magic answer, it will give you a code that narrows down the problem area.
Some specific causes for the light to be on are:
Gas cap left off, not tightened, not installed correctly, or needs to be replaced.
02 sensor.
Engine misfire - error might clear itself after 3 complete warm-up cycles; not restarts, but warm-ups.
At start up for a bulb check - Should not stay on.
Details here:

Car rough idling causes
misfiring engine is among the most common causes of a rough idle. You may notice your car idling roughly when it's in "Park" or when you're driving it and stop at a stoplight. A rough idle can be caused by damaged spark plugs or spark plug wires or a burned-out valve. It's important to address the cause as soon as possible to avoid potentially damaging the engine. Engine repairs are almost always expensive.
Learn more here:

Hope this helpful.
Best regards.

Oct 12, 2011 | 2004 GMC Envoy

1 Answer

Hi, My engine light came on so I took it to AutoZone who told me it was the EGR hose so I had that replaced 2 weeks ago. Yesterday, the light came back on so back to AutoZone I went this morning. It is...

Usually this P0456 code is caused by an incorrect or faulty gas cap. Filling the fuel tank with the engine running could conceivable cause this code as well or if the cap wasn't properly tightened. Any of the following could also be the cause:
  • A small leak in any of the EVAP hoses or fuel tank hoses
  • A small leak in the purge valve or vent valve
  • The EVAP Canister may be leaking

Mar 13, 2011 | 2002 Chrysler PT Cruiser

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Check engine light is on and it reads Misfire on #2 cylinder. Also oxygen sensor bank2 sensor 1 and Bank 1 sensor 3 behind the converter. Engine running rough.

the engine miss fire can cause the other codes to set. you need to repair the miss fire and clear all codes after the miss is repaired then see if the 02 sensor codes return. the miss fire is probably a bad spark plug wire a good tune-up should take care of it ........HAVE A GREAT DAY

Jan 27, 2011 | 1996 Oldsmobile Bravada

1 Answer

91 integra ok driving at mid rpm range no hills or coasting check engine light comes on car runs rough and dies. restarts and runs ok but dies 5-10 minutes later

Car runs rough and dies.The issue indicates fuel pressure problem.But as you mentioned check engine light comes ON.The check engine light comes ON when the cars computer (the ECU) notices any kind of electrical problem in car. Once the problem gets confirmed the engine light will remain permanently ON till the problem gets solved. In this case I suggest you to get your car scanned at autozone service center. It's absolutely free. In case in car scanning, if any error code is retrieved then you can check which part is faulty as per the error code. At autozone they also deal in parts.So if any part checked out faulty then you can get that part replaced as per the code.-------------thanks.Helpmech.

Dec 16, 2010 | 1991 Acura Integra Hatchback

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Check engine light came on and now blinks on. Very rough running, smelly exhausts. Still starts and runs just very rough. 2001 dodge intrepid. I have not check obd codes yet.

the emission code are the first you should check it is more than likely a vacum leak but if you let it go too long it will damage the catalytic converter and 02 sensors

Mar 16, 2010 | 2001 Dodge Intrepid

1 Answer

02 Oldsmobile Bravada check engine/reduced egine pwr light on

There are over 2000 different trouble codes that can store with your check engine light. Probably 30-50 of them (or sequences of them) can trigger limp-mode or safe-drive mode on most vehicles. In your case, I would strongly suspect a problem with the electronic throttle control assembly. For safety, vehicles with electronic throttle frequently limit speed and rpm to very low numbers when a fault is detected to prevent runaway accelerations and high speed collisions. Have it checked by a professional. It may be as simple as a sensor on your accelerator pedal, or the throttle assembly itself could be starting to fail. In either case, it shouldnt be played with unless you have the proper diagnostic equipment (a Tech-2 Scantool) and good repair data.

NOTE: Clearing the code with a generic tool or disconnecting the battery MAY allow the car to reset, and if the problem is intermittant, it may become normally drivable till the next time thr problem occurs. HOWEVER...the technician who fixes the car really should have access to the original failure information stored in the freezeframe snapshot the computer took when it set the code. If you reset the light or disconnect the battery, that info will be erased and make make diagnosis and repair much much more difficult.

Sep 15, 2009 | 2004 Oldsmobile Bravada

1 Answer

Evaporation Emissions

On most newer car the reason the evap system light come on is because the gas cap was not closed tightly. Also do not top off when fueling because this will ruin the evap system. What the eveporative sytem does is to make sure gasoline fumes don't go into the atmosphere. It basically sucks the fume from the gastank into the engine along with the regular combustion. First make sure the gas cap is good. If it is old replace it with a new one. Close it tightly. You may have to disconnect the battery to reset the code. If the code never came back again then it is fixed.

Aug 05, 2009 | 2002 Oldsmobile Bravada

1 Answer

Error codes: P0420 AND P0446

the p0420 could and usaully is a bad converter.

May 28, 2009 | 1996 Oldsmobile Bravada

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