Question about 2002 Hyundai Santa Fe
Customers car was driving down the street when they heard a "pop" and the car suddenly stalled. When I arrived, I noticed the fuel pump was not priming. I found that the fuel safety cut off switch had tripped. I reset it and the fuel pump started working but the car still would not start. I towed to my shop and it has codes for CMP sensor circuit failure. I noticed the CKP sensor was totally cooked and falling a part. So, I replaced both of them. The car also has a code for MAF sensor low voltage. I check for clogged air filter, cleaned the already impeccably clean MAF sensor.. no change. Also getting a code for Bank 1 catalytic below efficiency. and bank 1 sensor 2 beyond maximum threshold. I have yet to do anything about them because, except when COMPLETELY clogged.. I doubt that a cat would prevent a car from starting. I'm not sure where to go from here.. I am not familiar with any procedure on how to test the MAF, if there is a test. I checked wiring for wear/corrosion, none to be found. A friend of mine with a Tiburon had the same issue with his CKP, ended up having to replace the toothed wheel that the sensor reads along with the sensor.. I don't understand how a toothed wheel inside the crank case could ever become damaged/need to be replaced but, if it happens, it happens.
Sounds like the immobilizer has cut out the system. Also it could be the computer box has failed. Need to take it to the agents to put on there machine (GDS) to maybe code the keys
Posted on May 11, 2014
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Posted on Jan 02, 2017
That's a pretty RELIABLE code!... You have a bad CAT (Catalytic Converter). Trust it to be accurate. The conditions which set this code is when the Upstream O2 sensor's data/signal is compared to the Downstream sensor's data/signal... when they are nearly identical, that's when this code is set (unless you have an exhaust leak).. If there is an exhaust leak.. repair it, then retest/recheck.
Posted on May 31, 2009
SOURCE: what can cause a 2005
i would check ur fuses that supply voltage to ur o2 sensors, their in the fuse box and usually r labeled o2 sensr. sounds like the o2 sensrs dont have power
Posted on Apr 09, 2011
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