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Check Engine Light
The check engine light comes on in a car when the engine is experiencing a problem. Ask questions here about your car's check engine light.
7,238 Questions
If the light is blinking, that is a bad sign. Take it to a shop and have them read the code. It could mean your catalytic converter is failing. Can be the ignition coils, just replaced mine at 31.25 a piece.
I had this exact thing happen on my 98 Expedition Eddie Bauer. After changing all 4 of my o2 sensors the check engine light came back on. So I performed a complete tuneup while performing the tuneup I fould the vacuum line had been pulled from the PCV valve. I believe the shop my wife took it to last pulled it off for a repeat visit. I made sure both ends of the vacuum line were connected well after changing the PCV valve. I removed the codes and drove a couple hundred miles without the check engine light coming back on. In short, you probably have a vacuum leak or are needing to tune the engine. Both are easily accomplished.
I concur. Had the exact same problem with my 98 Expedition Eddie Bauer. Thankfully, I have an honest mechanic. Vacuum line was the culprit. Diagnostic codes indicated that all four O2 sensors needed replacing. Once 12 dollar part replaced, all codes cleared up and truck has run like a charm since.
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scanned codes don't necessarily give you the answer to the problem, just lead you to the answer. When the o2 sensor code came up, the sensor(s) should be then checked, not just replaced. Also I would think the probability of all 4 o2 sensors going bad at the same time would be approaching zero.
What would cause the service engine soon light to go on a 2001 Nissan Frontier?
In The Nissan I owned That Light lights up every 15, 20 or 30,000 miles depending on the model or year of the Car. There is usually nothng wrong, It is away for the Service Dep. to get you to bring the car in. Most Cars have either a reset button or you have to hook up a diagnostic compter to reset this. They sell a device to reset these for almost any model of car made. Or you might be able to find how to reset t online by doing a search for the model and year of your car.
Gmc Vehicle stall when air condition turned on?
This is probably a dirty throttle body. It should be removed and cleaned.
How do you reset check engine light on Volvo v90?
i want to know where the diagnostic plug for that car
AutoZone / PepBoys / Kragen / Checker should be able to loan you out the OBDII tool to scan and read for FREE. Then you can clear the code too.
What is 2001 chrysler check engine code p0300?
P0300 Diagnostic Code - Random Misfire
Symptoms.
Engine may stumble or miss
Engine may be hard to start
you may notice no issues
Cause
Failing spark plugs or spark plug wires
Bad coil or coil pack
Failing oxygen sensor(s)
Bad fuel injector or more than one
Stuck exhaust valve
Bad catalytic converter
EGR valve or valve passage clogging
Bad camshaft position sensor
Bad PCM or ECM
The Fix
Best first action is a tune up, new plugs, wires, inspect all hoses and wire connections then reset the code. If it returns you will need to narrow it down to a system, coils and coil packs should be tested, catalytic converters for function ( do you smell rotten eggs?). A misfire that jumps cylinders could indicate a lean condition, do you have any other codes along with the 300? this will help clue you in to the source, check valve function to make sure they are opening and closing fully.
This is probably pone of the most difficult codes to troubleshoot, so start with the basics and work your way into the more expensive options, in many cases a good old tune up solves the problem, back it up with a fuel system cleaning and see where you stand.
How do you reset service engine soon light on 1999 Ford F-150?
how do I reset my service engine light on my 1999 ford f150
After check engine light is reset how long before light will come back on if problem not fixed?
That depends on how long it takes the computer to run the self diagnostics that check the failed component. could be back on in seconds or weeks.
Check engine code FF 16 on a 1994 Jaguar XJS 4.0l?
fault code 16 is:
Air thermistor. Looks for signal less than 0.1 or more than 4.9 volts
How do you reset the service engine soon on an 06 Infiniti QX56?
Why my infiniti QX56 doesn't want to start, the service engine light is on? is it because i stayed without gas, or whats causing for it not to start. A tuneup has been done..
How do you reset the check engine light on a 1996 Chevy beretta?
Either unplug the battery for 10 minutes, or go to your local auto store (Orielly or Auto Zone) and borrow their scanner to clear the codes. Ask if you require assistance.
Trouble code P0246 means:Turbocharger wastegate solenoid A high
What is trouble code P0440 on a 2001 silverado?
Trouble code P0440 means: Evaporative emission control system malfunction
How do you reset check engine light on 1998 ford f-150?
take the hot side battery termanol off for 3 mins
Could be 02 sensor or mass airflow sensor
There are several reasons why a Toyota's warning lights may come on. The lights may come because there is a problem with the engine, low oil, or even bad brakes.
Why would a check engine light go off by itself?
The problem has gone away and the computer has passed the required tests enough times.
What causes a SRS light to be going off and on O3 Mit Lancer?
I would suspect you have a problem with the SRS (Supplemental Restraint System-Air Bags). This is not a DIY repair. Serious injury can occur when working on this system. It may still be under warranty. Take it to your dealer for repair.
Why is 92 Dodge stealth running bad with Check engine light after changing plugs and wires?
There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
How to repair 2003 Mazda protege 5 check engine light blinking running badly?
Have the trouble codes retrieved with an OBDII scanner to identify the problem areas before you start spending on repairs that might not be the cause of the problem(s).
Why is the check engine light is on on a 2000 Dodge Dakota?
There are pages and pages of things that can turn the check engine light on. You need to have it checked for codes to know what the cause might be.
How do you turn off the check engine light on 1999 hydunda?
There are pages and pages and items that can cause a check engine light. You need to have it checked for codes with a scan tool. After repair light can be shut off with scan tool.
How do you reset citroen c3 engine light?
you will need to plug in an obd diagnostic scanner to read the fault codes then clear them which will turn off the light
