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Wont start Error code P0340

Tiny
SWEETBRI
  • MEMBER
  • 2005 DODGE NEON
  • 2.0L
  • 4 CYL
  • 2WD
  • 160,000 MILES
Was driving and turned a corner and my car died and wont start back up. I have replaced spark plugs and wires, coil pack, speed sensor and one other sensor down by the speed sensor, crank shaft sensor and camshaft sensor and it still wont start. It back fired once after changing all these but that was it. On my dash when I turn my key on and off three times it keeps showing me the P0340 code error. Help me please.
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Thursday, October 27th, 2016 AT 9:33 PM

6 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Code 340 is cam sensor is bad or wiring issue etc. scan for codes and check fuel pressure with a gauge auto parts rent it. see link.
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
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Wednesday, January 16th, 2019 AT 5:39 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,758 POSTS
Have you checked to see if the timing belt has jumped?
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Wednesday, January 16th, 2019 AT 5:39 PM
Tiny
RENEE L
  • ADMIN
  • 1,257 POSTS
Hi SWEETBRI,

If you decide you would like to conduct the scan yourself here is a link to an article that features written step by step instructions and pictures explaining how to do the scan yourself, also I have included a link to our YouTube channel with a how to video on code scanning.

This is applicable even if your check engine light is not on.

Most scanners are inexpensive to purchase, you can purchase one online from sites like Amazon.com

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

https://youtu.be/YV3TRZwer8k

Once you have the codes please get back to us so that we can further assist you. We are always happy to help.

Thank you for visiting 2CarPros.com.

Kindest regards,

Renee
Admin
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Wednesday, January 16th, 2019 AT 5:39 PM
Tiny
SWEETBRI
  • MEMBER
  • 3 POSTS
Thank you I will read the codes now and get back with you shortly. I will also check to see if the timing has jump, before I check the fuel pressure.
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Wednesday, January 16th, 2019 AT 5:39 PM
Tiny
SWEETBRI
  • MEMBER
  • 3 POSTS
Ok so with the pros advice and deep looking the timing belt is broken! However it still shows the code P0340.
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Wednesday, January 16th, 2019 AT 5:40 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,758 POSTS
It's setting the code because the camshafts are not in synch with the Crankshaft because of the timing belt. That's why I asked about it in the first place. If the cams aren't turning, you won't have a can signal.
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Wednesday, January 16th, 2019 AT 5:40 PM

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