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post #1 of 5 (permalink) Old 07-09-2012, 11:29 AM Thread Starter
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Exclamation Codes P1818 and P0700

Hey everyone. My car has been driving fine, but then 2 days ago my check engine light came on. I read the codes and they came up p1818 and p0700. So I googled them, and P1818 - Transmission Neutral Safety Switch Short Circuit To Battery and the other one is pretty much saying that there is a code (so it's a code for a code). Sooo the big question(s) is/are...

Can I fix this without taking it to the garage?
If so, what could I do?

I'm just not sure what I could do to try and find the problem with it.

Any suggestions would be great.
Thanks.
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post #2 of 5 (permalink) Old 07-09-2012, 12:12 PM
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Well you can start by giving us more info, year,engine,transmission would be nice for starters. DTC codes are all listed on this site for our cars.

https://www.yourcobalt.com/forums/pro...-cel-list.html

---------- Post added at 04:12 PM ---------- Previous post was at 04:09 PM ----------

P0700 Transmission Control System Malfunction
P1818 Transmission Fluid Pressure (TFP) Valve Position Switch Indicates Drive without Drive Ratio -TCM"

So obviously it is an automatic.

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Last edited by Coby7; 07-09-2012 at 12:24 PM.
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post #3 of 5 (permalink) Old 07-09-2012, 12:17 PM Thread Starter
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2005
2.2 ecotec, automatic...
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post #4 of 5 (permalink) Old 07-09-2012, 12:23 PM
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Conditions for Setting the DTC

P1818 The TCM detects a PARK, NEUTRAL, or a drive range with a REVERSE ratio for 3 seconds.

This means this code could be set by putting your car in drive while it is still backing up. Always bring your car to a stop before shifting to drive. It could also be set coasting down a hill or driveway backwards in neutral for more than 3 seconds.

I would clear the code and see if it does it again in normal driving.

Every minute spent angry is a happy minute lost for ever and ever!!!
Drives 2016 Cocoa Buick Encore 1.4L Turbo auto KL4CJDSB2GB652675
Drives 2016 Sunset Orange Trax LT1 1.4L Turbo auto 3GNCJPSB8GL142716

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post #5 of 5 (permalink) Old 07-09-2012, 03:00 PM Thread Starter
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I hardly ever shift without stopping completely. I'll give it a try, and I hope it works. I'll keep things posted. Thanks.
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