Need Help !!! "Service engine soon" light on for 1997 Nissan Maxima GLE
My 1997 Nissan Maxima GLE has recently got "service engine soon" light popped up.
I checked the codes from Autozone. They are:
P0500 - Vehicle Speed sensor.
P0600 - AT communication error
P0325 - Knock sensor related
I went to a local Nissan dealer couple of times for this. He told me only one code(speed sensor) Got ripped off with no proper diagnosis. Got speed sensor replaced. Still it is showing the same code. Now he is asking for changing the odometer for the same error code. That rang a bell in my mind: "Was the Speed sensor really faulty at first place?" And all he is telling the things one after another.
When I told the dealer that I got 3 codes instead of one from Autozone. He replied : "Sir, we are authorised and certified Nissan Service center and we have sophisticated equipments from Nissan" Second time I went to same guy he showed me 2 codes. He told me it's a new code from the last time. And everytime diagnosis fees were charged. It's like trial and error method.
All I need is: Someone who can thoroughly diagnose the issues (all at once), and fix the things at reasonable price.
Can you folks guide me as what should I do? (Instead of getting rid of it :-))
Thx in advance
I would take this to a different dealer or someone who specializes in imports, besides a dealer. The codes you are indicating could be related to a broken wire or faulty TCM. The VSS code may come from the transmission control module being unable to receive input from the speed sensor -- and along with that, the AT Communication error code would result. The knock sensor code may also come from the fact that the knock sensor cannot get info about vehicle speed, so it is unable to tell if the engine is knocking or not based on the vehicle's speed. For example, a broken wire on a transmission solenoid to my wife's 1999 Saturn caused a "crankshaft position sensor" code -- because the crank position sensor didn't know where it was supposed to be relative to what info it was receiving from the TCM. Your VSS may not have been defective at all, but it sounds like this dealer has not done the proper diagnosis to make any parts replacement at this point. I would not change the odometer at this point because it sounds to me as though the problem is TCM/wiring related and not related to the odometer. Short answer: take it to someone else. The car is old enough that they won't need "the most sophisticated equipment from Nissan" to diagnose this -- just a willingness to fix the problem and track down the real cause, instead of swapping parts and praying. :)
alot of 97-99 maximas had wire harness problems.not saying it is but sounds like they don't want to fix the whole problem
Sinkis, Do you have a resolution to the problem. I have the exact same problem with my 97 Maxima SE. It's been serviced twice so far. I've had the wiring harness checked and the speed sensor replaced and I'm still having the the same problem. The next recommendation was to either replace the TCM or the ECM which can be pretty costly.
I wish I could help on the other codes, but I wouldn't worry about the knock sensor code, as almost every Nissan I've diagnosed has that code stored along with others, like a ghost code. I've never been able to figure out why.
The speed sensor was replaced and I still have a periodic loss of of the Speedometer, Odometer, and Trip Meter. It seems to happen when the car is first started on a cool evening. I've had my service tech check continuity between the ECM and the TCM and everything seems fine. The service manual shows that the the speed sensor is wired through the FPC connector but I don't believe that would give me a speed sensor fault. The P0600 - AT communication error and P0325 - Knock sensor related that is present as soon as I reset the fault codes. My service tech is speculating that the TCM may be faulty but the car has no engine or transmission issues at all. The error seems like a wiring issue but I can't find it.
I have the same problem that u have but I dont that knonck sensor. I have the speed sensor P0500, 02 Sensor B1 P0130 and the A/T com line transmission sensor P0600....my problems is its keeps turning off on me while i drive slow or stop....Stressing out....Have u figure it out your car problems?
I have the same problem P0600, this link help me figure out the problem just follow the instruction. http://forums.maxima.org/4th-generation-maxima-1995-1999/76800-check-engine-light-diagnosis-if-trouble-lights-read-here-first.html
for P0325 - Knock sensor http://www.youtube.com/watch?v=R2ntaxi7bXk
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