Check Engine Light
Burning Brakes
Joined: Jul 2014
Posts: 921
Likes: 345
In general a solid check engine light will not cause damage. A blinking one generally will. Give the age of the corvette going to go with a sensor. If it came on during drive I would go with a MAF but this one going to say oxygen sensor.
Team Owner
Joined: Apr 2013
Posts: 26,261
Likes: 4,363
From: Chirper Island
I agree with your advice about solid vs blinking with this: don't drive it if it's Blinking longer than it takes to get to a safe spot and have it towed.
However, w/o codes it could be darn near anything. We can guess all day long.
However, w/o codes it could be darn near anything. We can guess all day long.
Burning Brakes
Joined: Oct 2014
Posts: 1,057
Likes: 339
Autozone around here will come out to your car and read it for you. Have them reset it no matter what the results are.
Respond with the code(s) and you may find more help on here. Put it in the Tech section. Good luck!
Respond with the code(s) and you may find more help on here. Put it in the Tech section. Good luck!
Drifting
Joined: Nov 2013
Posts: 1,503
Likes: 600
While a little more expensive than most I can reset almost anything and can live monitor anything going on. Worth every penny I paid... Most get the little bluetooth ones and they also work...
https://smile.amazon.com/gp/product/B0090B7M2O
https://smile.amazon.com/gp/product/B0090B7M2O
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Le Mans Master
Joined: Oct 2014
Posts: 8,680
Likes: 2,729
From: Atlanta GA
Safety Car
Joined: Jul 2018
Posts: 4,303
Likes: 2,055
From: Margate, FL
Yep I got a Bluetooth OBD-II dongle along with the app on my iPhone. It has saved me multiple trips to the dealer on various cars. Can also stream live, real time engine data to the app to monitor things as you drive.
For example I had a CEL pop up on my Dodge truck, so I pulled the code and it turned out to be bad power steering pressure sensor. Watched a 5 minute YouTube video on how to replace the $18 sensor, super easy fix! Also found a bad cam position sensor in my previous Nissan. Another easy and cheap fix because I knew the exact part that had failed. Well worth having a way to read various codes.
For example I had a CEL pop up on my Dodge truck, so I pulled the code and it turned out to be bad power steering pressure sensor. Watched a 5 minute YouTube video on how to replace the $18 sensor, super easy fix! Also found a bad cam position sensor in my previous Nissan. Another easy and cheap fix because I knew the exact part that had failed. Well worth having a way to read various codes.
Safety Car
Joined: Aug 2012
Posts: 3,960
Likes: 1,106
With the CEL on there are one or more active DTCs set. The dealer should also have been able to read the historic DTCs that were set.
Hopefully they do better next time! Many of the basic consumer level code readers cannot retrieve codes set by some of the modules but the dealer level equipment certainly can. Various controllers other than the ECM, like the TCM, will send a request to have the CEL illuminated and that request DTC links back to additional codes stored in the module. There is a good chance the fault originated outside of the engine/emissions systems but unless the dealer was using a scanner from "the dollar store" it should have provided a listing of the DTCs regardless of which module or subsystem set them.
Hopefully they do better next time! Many of the basic consumer level code readers cannot retrieve codes set by some of the modules but the dealer level equipment certainly can. Various controllers other than the ECM, like the TCM, will send a request to have the CEL illuminated and that request DTC links back to additional codes stored in the module. There is a good chance the fault originated outside of the engine/emissions systems but unless the dealer was using a scanner from "the dollar store" it should have provided a listing of the DTCs regardless of which module or subsystem set them.
Safety Car
Joined: Aug 2012
Posts: 3,960
Likes: 1,106
I would suspect a communications issue with the TCM, but basically you have a communications error between the engine and transmission control modules. Sometimes oddball codes get set when the battery is getting too old and voltage drops unexpectedly during a start sequence so if you are on your original battery this could be it. P0731 is reporting an incorrect gear ration in the first range which generally means a mismatch between the input, intermediate, and output shaft speeds in the transmission but a glitch from low voltage could have caused an error with the shaft speed sensors.
Last edited by NSC5; Aug 18, 2019 at 02:15 PM.