Check Engine Light
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Joined: Sep 2014
Posts: 67
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From: Florida
Check Engine Light
I was driving home tonight and after about 1/4 mile of driving the check engine light came on. My speedometer for RPM and MPH stopped working and showed readings at 0 even though the car was moving at 15-20 mph. I pulled to the side and shut the car off and then turned it back on to find that the light was still on. I ended up driving back home due to me being cautious and thought that there might be a big issue at hand here. My car is a 2013 with 14,700 miles. Just bought it a month ago and have had no issues until now. Can anyone give me any tips on this issue?
Little side note-it has been raining tremendously in my area for the last 3-4 days, one road i took this morning was under 2-4 inches of water. I went through the road only because i had to and slowed down to speeds of 10-15 mph. I don't think this caused any damage to the engine because i drove the rest of the day and everything was fine. Just felt like i had to disclose this info.
Thanks guys
Little side note-it has been raining tremendously in my area for the last 3-4 days, one road i took this morning was under 2-4 inches of water. I went through the road only because i had to and slowed down to speeds of 10-15 mph. I don't think this caused any damage to the engine because i drove the rest of the day and everything was fine. Just felt like i had to disclose this info.
Thanks guys
Safety Car
Joined: Dec 2006
Posts: 4,642
Likes: 9
From: Dalllas/Ft Worth Area TX
I was driving home tonight and after about 1/4 mile of driving the check engine light came on. My speedometer for RPM and MPH stopped working and showed readings at 0 even though the car was moving at 15-20 mph. I pulled to the side and shut the car off and then turned it back on to find that the light was still on. I ended up driving back home due to me being cautious and thought that there might be a big issue at hand here. My car is a 2013 with 14,700 miles. Just bought it a month ago and have had no issues until now. Can anyone give me any tips on this issue?
Little side note-it has been raining tremendously in my area for the last 3-4 days, one road i took this morning was under 2-4 inches of water. I went through the road only because i had to and slowed down to speeds of 10-15 mph. I don't think this caused any damage to the engine because i drove the rest of the day and everything was fine. Just felt like i had to disclose this info.
Thanks guys
Little side note-it has been raining tremendously in my area for the last 3-4 days, one road i took this morning was under 2-4 inches of water. I went through the road only because i had to and slowed down to speeds of 10-15 mph. I don't think this caused any damage to the engine because i drove the rest of the day and everything was fine. Just felt like i had to disclose this info.
Thanks guys
Le Mans Master
Joined: Feb 2007
Posts: 8,514
Likes: 235
From: Currently somewhere in IL,IN,KY,TN,MO,AR,MS,AL, or FL
And the engine still ran with a defective crank shaft position sensor? 
Did other displays on the dash work (volts, oil pressure, etc)? There are several hundred possible causes of a CEL. Without more information anything anyone says is just a guess. Your mention of water, however, would lead me toward a wet Engine Control Module (ECM) connector. The ECM is where the digital signal packets for speed (from transmission) and RPM from engine are created and sent over the local bus to the Instrument Panel (IP). The reason I ask about other displays is the IP also gets information from the Body Control Module (BCM) and if those are still working then that at least narrows it down to the signals from the ECM. Having both RPM and speed out also limits it from the sensor direction to the ECM since they are entirely different signals from different sensors having only the ECM in common.
You say you drove the rest of the day and everything was fine. If the issue is gone I would again think wet connector and ignore it until it happened again. But if you want to look, the ECM is on the firewall in the passenger wheel well.
Last edited by FortMorganAl; Sep 28, 2014 at 07:35 AM.
Thread Starter
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Joined: Sep 2014
Posts: 67
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From: Florida
Thank you for the extended reply.
I did not drive the rest of the day however. The issue with the water was very early in the day (9am) and the check engine light came on at 10:30 pm. So i have yet to see if the light still is on. To answer your questions, the speedometer and rpm gauges were the only ones that did not work. Everything else looked good and worked
I did not drive the rest of the day however. The issue with the water was very early in the day (9am) and the check engine light came on at 10:30 pm. So i have yet to see if the light still is on. To answer your questions, the speedometer and rpm gauges were the only ones that did not work. Everything else looked good and worked
Retired & lovin' it!
Joined: Mar 2005
Posts: 4,473
Likes: 547
From: Jackson NJ
I was driving home tonight and after about 1/4 mile of driving the check engine light came on. My speedometer for RPM and MPH stopped working and showed readings at 0 even though the car was moving at 15-20 mph. I pulled to the side and shut the car off and then turned it back on to find that the light was still on. I ended up driving back home due to me being cautious and thought that there might be a big issue at hand here. My car is a 2013 with 14,700 miles. Just bought it a month ago and have had no issues until now. Can anyone give me any tips on this issue?
Little side note-it has been raining tremendously in my area for the last 3-4 days, one road i took this morning was under 2-4 inches of water. I went through the road only because i had to and slowed down to speeds of 10-15 mph. I don't think this caused any damage to the engine because i drove the rest of the day and everything was fine. Just felt like i had to disclose this info.
Thanks guys
Little side note-it has been raining tremendously in my area for the last 3-4 days, one road i took this morning was under 2-4 inches of water. I went through the road only because i had to and slowed down to speeds of 10-15 mph. I don't think this caused any damage to the engine because i drove the rest of the day and everything was fine. Just felt like i had to disclose this info.
Thanks guys
Thread Starter
Advanced
Joined: Sep 2014
Posts: 67
Likes: 0
From: Florida
Oddly enough, the light shut off today after I installed the new exhaust that i had planned on installing all week. don't know if the engine light situation is temporary or what but will wait to see what happens. Thank you all for the replies!
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Safety Car
Joined: Dec 2007
Posts: 4,974
Likes: 148
From: Magnolia Texas
You may want to still read the codes to see if one was recorded. For certain issues, the CEL will reset itself after a given number of starting sequences but the code should be retained.
Le Mans Master
Joined: Feb 2007
Posts: 8,514
Likes: 235
From: Currently somewhere in IL,IN,KY,TN,MO,AR,MS,AL, or FL
Some reset immediately but those that set the CEL usually stick around in memory for a while. Hey, I am not only long-winded but also verbose, windy, wordy and prolix. Just ask anyone. Or, better yet, let me tell you...
