QuestionQUESTION: Hey there !
I have a Hyundai Elantra 2001 model,AT, Im the second owner, bought it dec '05, ever since I got the car the Check Engine light was ON, the car wudnt shift gears if I tired accelerating fast, so I changed the speed sensors then,but the check engine light didnt turn off, I hadnt reset it either, today I went to Advanced Auto Parts and got it checked ..these are the errors..
Global OBDII
DTC (Codes)
P1529
Manf Cntrl Veh.SpDd. Idle Speed Control Auxillary Inputs
P0501
Veh Speed Sensor A range/Performance
P1502
Manf Cntrl Veh.SpDd. Idle Speed Control Auxillary Inputs
P0500
Veh Speed Sensor A Malfunction
P0705
Trans Range Sensor Circuit Malfunction ( PRNDL Input)
DTC Pending (Codes)
P0501
Veh Speed Sensor A range/Performance
P1502
Manf Cntrl Veh.SpDd. Idle Speed Control Auxillary Inputs
What do I do next?
Thanx a lot..
ANSWER: Hello,
All those codes except P0705 are indicating one thing: Vehicle speed sensor which is located on the front right wheel. Make sure the wire is not damaged and connector is fully connected. If everything looks fine then replace that sensor. P0705 is showing a problem at tranmission range switch which is located on the top of the trany. It is controlled by the shifter cable. But I reccommend you to take care of that speed sensor problem before you replace range switch. Because , speed sensor codes might be the cause of range switch code. After you fix speed sensor problem you must erase the memory. If you do not erase the memory , computer will act like it has not been fixed since it has an adapted memory system.
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QUESTION: Thank You so much for the reply !!
Well I had gone back to Autozone and got the codes read again, this time it doesnt show P0705. How do I access the Vehicle speed sensor on the right wheel? Do I have to remove the right side front tire/wheel? Also what does the speed sensor look like and where exactly is it located? A picture would be perfect. Also is there any way to know if its the speed sensor itself thats damaged or its the wiring? I hope Iam not troubling you a lot !
Thanx again
AnswerHello again,
No, you are not troubling me. Wheel speed sensor is located behind the rotor, rear side of the carrier. If you remove the right tire and look behind the rotor form rear side of it you will see the sensor attached to the carrier with single 10 mm bolt. It counts the teeth on the axle.It has a thick wire coming out of it and running next to the strut , going up and inside the fender. First visually inspect that wire to see if there is any damage. Also make sure all teeth on that axle are ok. Any missing or cracked teeth can cause that problem. If you are sure everything is looking fine than replace the sensor.
