Codes po 123 po335 po446

Steve Allison

• 5569 Answers
• Posted on May 18, 2009

SOURCE: SONATA V6 2000 DOES NOT START NO FIRE CODE PO335

The crankshaft sensor determines when to fire the plugs; if it has failed, no plugs will fire.
If you have no mechanic friends who know how to test this sensor, you should probably invest in an aftermarket service manual. They have simple tests for most sensors and conditions that don't require costly equipment or detailed knowledge.
I prefer Haynes and they are available on line here:
Haynes Sonata Manual
You may also find them elsewhere for a few dollars less.

SOURCE: trouble code PO335 for a 2000 hyundai accent

P0335 is your crank sensor, it is either on it's way out or is finished, it is essential that it be replaced or you will be stranded-not too hard to do if you are somewhat handy, part is usually not too expensive either.

Mike Butler

• 6674 Answers
• Posted on Feb 02, 2010

SOURCE: i have Hyundia accent 2001 with the code po335

That is the code for faulty connection to, or bad Crankshaft position sensor. Not 100% sure of exact location but should be near flywheel, or at front near crankshaft.

SOURCE: MY CAR WAS PUT ON

hi p -codes are as follows po 301 cylinder 1 missfire detected
po 304 cylinder 4 missfire detected
po 335 crankshaft position sensor A circuit malfunctio
po 750 shift solenoid A malfunction

SOURCE: I have a 2004 Sante Fe 4 cyl. The check engine

OK To start with, you need to forget about the air conditioner until you get your engine running correctly. The HVAC is controlled by the Powertrain Control Module (PCM). The PCM is probably not allowing the HVAC to run due to all the engine misfire codes you are getting. It may be someting else, but until you get your engine running right, you could be spinning your wheels.

I have no clue what you are talking about when you say "Ignition Sensor" - there is no such sensor on any vehicle that I am aware of. There are many sensors that can affect the ignition like the Crankshaft Position Sensor, but none are called "Ignition Sensor".

P0300 Simply means that there is more than one cylinder misfiring.
P0301 means that cylinder #1 is misfiring, P0302 means that cylinder #2 is misfiring, P0303 means that cylinder #3 is misfiring, and P0304 means that cylinder # 4 is misfiring. (these are what are known as "current faults". The codes ending in "P" mean the same thing, but they are "pending" codes. Current faults MUST be dealt with FIRST.

The P0446 is not a valid code for a 2003-2005 Hyundai Santa Fe as far as I can tell. I tried to look the code up by application and it simply is not there. You may want to read the code again. Sometimes, if you are reading the codes with a "generic" OBD code reader, it will give the closest description it can for a "Vehicle-Specific" code. They are not allways correct. You may want to scan your computer with a scanner that is equipped with the Vehicle-Specific software for your vehicle. You will probably get a different rendering of the code.

The "generic" description of P0446 is "Evaporative Emmission Control System Vent Control Circuit" Again, the DTC list for your vehicle lists similar codes: P0445, P0447 and P0448, however it skips over the P0446 code. If you in fact have a problem with your EVAP vent solenoid circuit, it could, concievably be the cause of your misfire problem. It is possible that the vent solenoid is causing a huge vacuum leak. NOT LIKELY that it is causing the misfire codes, but POSSIBLE.

Anyway, there are literally HUNDREDS of parts that can be the cause of a misfire. This needs to be PROPERLY DIAGNOSED to determine the cause. It could be anything from worn-out spark plugs, a vacuum leak, a faulty fuel pump, all the way to a blown head gasket or cracked cylinder head. Whatever the actual cause may be, it is obviously affecting all 4 cylinders. (This will rule out some things).

Please also review this article:
What Else Could Be Wrong?