I am also having trouble pumping gas into the car. It is using alot of gas as well
Code P105 is manifold absolute pressure barometric pressure circuit. code P0445 evaporative emission system purge control valve circuit shorted. code PO720 AT output speed sensor circuit open or short ground.HAVE MANY CODES COULD BE ECM FAILING HAVE DEALERSHIP CHECK OUT ECM.ECM COULD HAVE SHORT OUT PC BOARD.
SOURCE: Check Engine Light is On 2006 Hyundai Elantra 13,000 miles
An easy fix, if the check engine light is on find an Auto Advance, they can clear the code for you. Any auto parts store may be able to as well, Auto Zone is another one that may be able to help.
SOURCE: I have a 2001 hyundai elantra.my check engine
Satlaan: You need an odb2 scanner to extract the trouble codes. If you don't have one you can buy one for around $30 from most auto part stores. Alternatively, some auto part stores (Auto Zone for example) will read your trouble codes for you, for free. The trouble codes could be anything from a loose gas cap to a misfire, without the scanner there is no way to know.
Rashidas: How did you fix the speed sensor? This is not the speedometer cable that bolts to the transmission, but a separate sensor inside the right side front wheel behind the brakes.
This AllExperts.com post explains it pretty well.
http://en.allexperts.com/q/Hyundai-Repair-815/hyundai-elantra-fault-codes-1.htm
Don't just assume it is the sensor though,, that wiring gets beat up by all the **** you drive over, so look at the wiring carfully.
Hope that helps,
Ellie
SOURCE: 2001 Elantra stall, loss of power. Driving at
I am having the exact same problem with my 2001 Hyundai Elantra. I was told that the engine code that comes up when the sensor is on is called "Absolute Pressure In The Manifold". I was told by a "Hyundai Specialist" that when that code comes up it usually means that the seal on the manifold is Fuct. When my mechanic checked that out for me he had noticed that my manifold had 4 cracks in it(can varify cause he showed me). He replaced the manifold and gasket. The car ran fine for about 2-3 days and since then the problem has since come back and my check engine light will no longer go on/off it only stays on. Because of the check engine light always staying on I have noticed that on many occasions my car will hiccup many times in a row. The only way to stop the hiccup I have noticed is to take my foot right of the gas for approx. 2-3 sec then car will continue without hiccup(till it happends all over again). All in all I have been having this problem now for approx. 1 year and if there is somehow someway it could be repaired I would appretiate it.
SOURCE: trouble code 1997 Hyundai Elantra, P1128
P1128 trouble code is for (Upstream Heated O2 Sensors Swapped). Did you switch around any of the O2 sensors?
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