2007 C6 throwing P0335 code
Thread Starter
Heel & Toe
Joined: Sep 2018
Posts: 23
Likes: 4
2007 C6 throwing P0335 code
This car has 25k miles on the odometer and is factory except for a set of headers and high-flowthrough cats. I recently had the car tuned on a dyno at a very respectable shop.Yesterday after a 45 minute drive I parked the car for about 10 minutes before restarting it. When I hit the start switch I knew something wasn't right. It sounded like the starter was hung for a few seconds before the engine fired up. After driving it for a few minutes I noticed that the check engine light was on and the RPM gauge was not working. I pulled over, read the code and reset and all was good. Any ideas as to what may have caused this?
Last edited by TennesseeJed; Nov 9, 2018 at 07:51 AM.
Safety Car
Joined: May 2006
Posts: 3,696
Likes: 492
From: Potomac MD
Check make sure our starter / battery connections are tight. I have had this happen the crank sensor was not getting the correct voltage during the first few seconds and it throughs a code and it does not run well either. The crank sensor is what is making the tach not work.
Thread Starter
Heel & Toe
Joined: Sep 2018
Posts: 23
Likes: 4
Check make sure our starter / battery connections are tight. I have had this happen the crank sensor was not getting the correct voltage during the first few seconds and it throughs a code and it does not run well either. The crank sensor is what is making the tach not work.
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,624
Likes: 4,069
From: Cape Coral, Florida
C5 guy here but P0335 is a crankshaft position sensor DTC...if the sensor starts going wonky you will see a longer than normal time for the engine to start...and why you didn't see your Tach working....checking for RPM when the car isn't starting is a good way sometimes to check to see if you have a bad crank sensor !!
Thread Starter
Heel & Toe
Joined: Sep 2018
Posts: 23
Likes: 4
That's exactly what I think may be going on here. Thanks for your reply. I bought the car with a set of AR headers already bolted on (no other mods). Is there a way to protect the vulnerable electrical components, including the CPS, from the heat coming off the headers? I'd like to fix this problem once and for all so that I can take long road trips without worrying.
Last edited by TennesseeJed; Nov 10, 2018 at 05:27 AM.
Thread Starter
Heel & Toe
Joined: Sep 2018
Posts: 23
Likes: 4
How involved is replacing the starter and the crankshaft position harness on a 2007 C6 with headers? I'm not a mechanic but will happily pay one to do this. I'm just curious to know how much work is involved here.
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